Exam Questions Essay

Advanced countries, which have the capability to innovate, as well as high-income levels and mass consumption, will sell the item first to its domestic market, then will become initial exporters of goods to other technically advance countries. After the product becomes adopted and used in the world markets, production gradually moves away from the point of origin. The advanced country loses their exports initially to developing countries (who will import and later manufacture these goods) and subsequently to less developed countries. Eventually, the original advanced country (original innovator) will become importers of these goods because they will have begun producing other new products. The duration of each stage of the cycle varies with the product and the type of management supporting it. Understanding the product life-cycle stages allows a company to fully take advantage of market opportunities by either establishing or protecting a competitive advantage through a long-lasting market presence. The main usiness reason for extending the product life-cycle would be to increase sales through longer existence in the marketplace. Certain consumers will embrace a product at different stages of the product life cycle so by extending each stage of the cycle, there is a better chance of exposure to the targeted consumer group. A commonly used example of this is the invention, growth and production of the personal computer. Stage one is considered the new product stage and this is where domestic production essentially begins. After a period of research and development, a new product is introduced to meet local (or national) needs. The product is created, produced and consumed in the domestic market and virtually no trade takes place. During the introduction phase, the innovating company does not know the extent to which a profitable market exists. For instance in the late 1970’s and into the early 1980’s, during the early stages of the personal computer, IBM and Apple pc’s were produced in the US and aimed for office and small business use. Personal computer use spread quickly throughout the domestic market as more and more households made purchases for increased personal productivity and gaming purposes. In stage two, the maturing product stage, domestic production peaks as the demand for the product significantly increases since the consumer base begins to acknowledge the product value. This stage is signified by a period of growth as sales and a rise in profits as mass-production techniques are developed and foreign demand expands (developed countries). At this stage the product is now exported to other developed countries and both domestic and foreign competitors emerge. A copy product is produced elsewhere and introduced in the home country (and elsewhere) to capture growth in the home market. Based on production costs, manufacturing moves to other countries. As was the case with Apple PC’s, production in this stage moved out of the original facility and into manufacturing plants in California and Texas as well as distribution warehouses in both the US and the Netherlands. Stage three is the standardized product stage. This is when the market for the product stabilizes and domestic production declines. The product becomes more of a article of trade and companies are compelled to reduce manufacturing costs which is the main reason for moving production sites to countries with lower labor costs. As production moves to developing countries, in turn, they begin to export the product to developed countries. A product saturation phase is experienced as sales level off and the first signs of decline occur. In the personal computer industry, the US market low-priced brand-name imports from producers such as South Korea’s Hyundai and Samsung. Several Taiwanese manufacturers exported millions of personal computers both to the US and other countries, a large portion which are produced for foreign distributors. To contest this, Apple condensed their product line, expanded use of industry standard parts, outsourced component manufacturing and streamlined warehousing operations. There is a final stage of decline in which poorer countries constitute the only markets for the product and import competition is very strong. At this point, almost all declining products are produced in less developed countries. The PC is not necessarily a good example of decline, for one because there is a weak demand for computers in less developed countries, but rather an example of technology that is ever improving which would make earlier versions of computers and related software obsolete. Normally, a product may finally disappear from the market at this point, however, PC technology continue to improve. There is no threat of the PC disappearing, but certain versions will eventually become dinosaurs. . Explain Porter’s Diamond in terms of Nokia’s development as an international mobile telecom powerhouse. Michael Porter’s â€Å"theory of national competitive advantage† framework was the product of a study of patterns of comparative advantage among industrialized nations and looked at sources of competitive advantage from a national context. The diamond-shaped theory can be used to evaluate both a firms’ ability to function in a national market as well as a national markets’ ability to compete internationally. Porter’s theory of international trade comes from the interaction of four country- and firm-specific elements: 1. Factor conditions – this is a country’s legacy of production factors that affect its ability to compete on an international level such as human resources, physical resources, knowledge resources, etc. Porter looks beyond the most basic factors of land, labor and capital to include the educational level of the workforce and the quality of the country’s infrastructure. 2. Demand conditions – demand in the home market helps the company to establish a competitive advantage. A highly developed domestic market will pressure a firm to innovate faster and to create more advanced products than those of competitors. When the domestic market for a particular product is larger locally than in foreign markets, the â€Å"home† firm will devote more attention to that product which leads to a competitive advantage when exporting begins. 3. Related and supporting industries – these related and supporting industries provide cost-effective inputs and participate in the process of upgrading which serves to stimulate other companies in the chain to innovate. When local supporting industries are competitive, the â€Å"home† firm experiences more cost-effectiveness and innovation. This effect is reinforced when the supporting industries (suppliers) are strong competitors as well. 4. Firm strategy, structure and rivalry – the way in which companies are created and managed are important for success. The presence of rivalry in the domestic market is important because it creates pressure to continually innovate in order to promote competitiveness. Other conditions that affect the diamond theory are: – Government – obviously the government can influence the supply conditions of key productions factors, the demand conditions in the domestic market and the competition between domestic firms. The government can also intervene on several different levels (local, regional, national, international). -Chance – clearly, chance events will occur that are outside the control of the domestic firm. Chance is important because it can create or disrupt competitive positions. Porter’s Diamond in terms of Nokia Factor conditions: -Finland is one of the world’s most homogenous and stable societies as well as having very sophisticated consumers; -As a country, Finland has invested money into a strong educational system which gives them an excellent educational system with which to provide the necessary work force; -Finland has a uniform, market-oriented government; Nokia, with close ties to national government, has helped propel technology, legal issues and export opportunities. Finland as a whole has a national competitive strategy; -Substantial public investment in telecommunications-related R&D which focuses on wireless technology; -Finland has a tradition of innovative engineering and telecom industry -Due to harsh physical and natural conditions, options for a land-based wired system was a very expensive option, making wireless digital systems a relative bargain for the same price; -Most of the population speaks English; -Finland was an early adopters of the internet and other wireless activities. Demand conditions: – As mentioned in the Factor Conditions, a sparsely populated area supports adoption of wireless devices; -The weather and physical supports mobile phone over face-to-face conversations; -Nationally, a heavy usage of texting and other wireless message services; -Finland a test market for wireless applications; -Nordic Mobile Telephone created the world’s largest single mobile market. Related and Supporting industries: – Huge R&D spending by government and companies; Finland, as a whole, offers strong venture capital, and a strong manufacturer network; -Due to the nature and need of wireless communication, there is a high number of specialized companies due to fragmented market; -There are approximately 3,000 Finnish firms in telecom and IT related products and services; -There is a large local supply allowing for highly customized contributions Firm strategy, structure and rivalry: – Significant historic reasons for highly competitive la ndscape within Finland; -A very strong export-centered commerce experience; Sturdy network and links between companies, banks and governments; -The Regional Development Agencies Act favors intense rivalry; -History of competition in telecommunications services throughout the 20th century; -Finland was early to deregulate in telecom-related industries; -A high number of telecom firms create an active local rivalry in wireless communications; -There is no monopoly on any of the value chain parts of telecom and a very healthy competition between companies; -European consumer demand (roaming, etc. ; Finland has been a part of the European Common Market since 1995. Other conditions that affect the Diamond Theory: – Government oVery stable with a long-term view (low turn-over with 6-year terms); oStrong initiatives to improve national innovative capacity; oAssurance of technological neutrality; oOpen socialist economy; -Chance oConditions in Finland provided a unique medium for Nok ia’s success. Creating, maintaining and updating land-based wired communication networks can be very slow and very expensive which made wireless digital systems seem a virtual bargain. . What is Absolute Advantage and how does Intel’s global position in mircoprocessors reflect this? Adam Smith developed the theory of absolute advantage which asserts that one party (a nation, a firm, etc. ) benefits from manufacturing more output than others since it is possess a unique resource or commodity. This particular resource or commodity can be a certain method, a distinct knowledge or manufacturing process that increases production efficiency, and thus reduces the relative need for additional resources. The theory holds that different countries (or firms) produce some goods more efficiently than others based on those particular resources or commodities. Limitations to the theory exist if there multiple unique resources or commodities – once the hypothesis expands to include multiple unique resources, the absolute would turn to a comparative advantage. Generally, in international trade, countries export goods/services when they have an absolute advantage in that product area and will import goods/services when another country (or firm) has the absolute advantage. Intel and Dell had a unique relationship in this regard – Intel had set the industry bar in terms of microprocessors and Dell, using Intel exclusively, became one of the strongest PC manufacturers in the world based on their distinctive marketing tool of â€Å"custom-made† computers. Both firms benefited from this relationship as they both had an absolute advantage on the items they produced. Further, according to the theory, if a country (or firm) has no absolute advantage in any product or service, no trade will occur. For instance, if both Intel and Dell manufactured microprocessors and PC hardware, no trade would exist between them – they would be direct competitors since no benefit would exist to either of them. A competitive advantage occurs when a firm acquires or develops a product or feature that allows it to outperform its competitors. To gain competitive advantage, the firm strategy is to manipulate that unique resource or commodity over which it has a direct advantage which gives them the ability to generate a competitive advantage. Superior performance outcomes and superiority in production resources reflects competitive advantage, and in doing so, gives a firm absolute advantage over an industry (or product). In the case of Intel’s global position in microprocessors, their strategy has been to continually introduce cutting-edge technology which ultimately means that consumers pay for the research and development of the speeds of new chips. It is a cyclical process, which demands more research and development of even faster, smaller products. The company does this to constantly renew consumer need which helps keep margins high. This business model of Intel’s can be compared to the auto industry’s â€Å"planned obsolescence. † The introduction of new models means the previous model is not as good, or new, anymore. As such, consumers feel compelled to purchase the newest, latest, greatest product. The trends are pushed by more powerful applications, which in turn create the need for new stronger, faster microprocessors and other new generations of computer products. Here are some of the contributing factors in Intel’s absolute advantage in the microprocessing industry: 1. Distinct ability to draw a prevailing share of the market’s attention – Intel benefited from a very exclusive and significant relationship with Dell (â€Å"Intel Inside†) until May 2006. With Dell being a major player in the computer hardware market, they offered â€Å"custom-made† computers with an exclusive agreement to offer only Intel processors inside. 2. Capability to impose innovative obstacles which created more labor for any competition – Not only did competitors already struggled to meet specs for the industry standards, they also experience issues keeping up with Intel’s production speed and product features. 3. Drive costs down and keep profits up – Intel was able to make its partners (and consumers) pay for this with an average selling price of over $150 a unit. PC makers had to accept this because at the time, Intel was only choice. 4. Strong reputation as the â€Å"reliable† standard – PC makers and consumers had not reason to look for alternative processors based on Intel’s innovation combined with the lack of reliable parts produced by competitors. 5. Economy of scale – Because the per unit cost of manufacturing depends on the size of the firm’s output, the larger the firm, the greater the scale of manufacturing benefits. Due to Intel’s economy of scale in the microprocessing industry, they could potentially monopolize the industry. Based on Intel’s strengths mentioned above as industry leaders (#2) as well as their ability to drive costs down while keeping profits up, Intel was untouchable and could manage to win any price war brought on by the competition. The Intel quality was also so high that the unreliable chips made by the competition almost, until recently, didn’t even create much of a price war since there wasn’t another game in town. 4. Explain Comparative Advantage? Then describe the development of India’s software industry and how it reflects one theory of competitive advantage. Comparative advantage theory is an international trade theory attributed to David Ricardo that indicates that firms or nations trade because they have superior productivity in a particular industry and can produce that particular good or service at lower marginal and opportunity costs than another party. In simple terms, this theory explains how trade can create value for two parties even if one party can produce all goods with fewer resources than the other. The thought being that each country can gain by specializing in the goods/services where it experiences this cost/efficiency advantage and trade that good/service for another where they do not posses the same advantage. Governments may attempt to counter comparative advantage by raising trade barriers, imposing high tariffs, and allowing newer and relatively uncompetitive industries ample time to become established. Comparative advantage is an appropriate theory to explain why particular countries export more services that support the global supply chain of both multinational enterprises and domestic firms. The source of a nation’s comparative advantage evolves from the mixture of its own factors of production such as availability of workforce, labor skills, access to capital, land and technology. For example, India is an excellent example of a country that has developed a highly efficient and low-cost software industry. This industry supplies not only the creation of custom software, but also call centers for customer support and other information technology services. The Indian software industry is composed of many subsidiaries of multinational corporations as well as independent companies. This question focuses on the rise of the software industry in India. As a relatively poor country, India in the past has not normally been thought of as a nation that is capable of building a major presence in a high-technology industry (e. g. , software). However, over the last decade or so, the Indian software industry has become an important force in the global software market. Among others, the main factors that have boosted India into this position are their large number of well-educated, English-speaking work force, a strong national work ethic coupled with technical experts who are paid only a fraction of the salary (including overhead) earned by U. S. counterparts. Additionally, the low cost of international telecommunication networks further enhances the comparative advantage of an Indian location for outsourcing. India has a comparative advantage in those services that are tradeable such as business process outsourcing and programming services. In looking at IBM’s outsourcing and how it utilizes both a US workforce and an outsourced Indian workforce, it is important to identify the relative strengths of each. For the mainly technical aspects of the job, IBM realizes cost savings by using the Indian workforce. Since programming wages are low in India and the average productivity of Indian programmers is somewhat comparable to the productivity of US programmers, then India can potentially enjoy a comparative advantage in programming. For those aspects of the job specializing in knowledge of a clients’ business, the US workforce is well-matched to do the job. The complementary nature of these two separate workforces rose out of the need of IBM to compete in more than just one area in order to succeed. Utilizing the Indian workforces allows IBM to realize a cost savings that can be used in other areas of their business. India, on the other hand, benefits from the trade with IBM by realizing large employment in the country as well as a boost to the economy that will only help to continue developing the country. 5. Explain briefly the common patters of successful Japanese entry into global markets once dominated by US firms such as RCA, Xerox and GM. In the business world, an initial direct attack of a competitor is usually most advantageous to the defending company since the attacking company usually ends up spending an exorbitant amount of resources without ever actually reaching its goals. This is a prime description of certain large companies such as General Electric, Xerox and RCA back to the 1970’s when all of them waged war against IBM in the computer market. All suffered very heavy monetary losses and as a result, did not engage further in the computer industry. The gamble cost these companies devastating sums upward in the millions. A company’s objective is to make use of its resources in such a way that allows them to maximize the market share. Direct attacks don’t necessarily serve that purpose, but rather the indirect attack seems to be more successful. The successful market penetration by Japanese companies was facilitated by an indirect approach. As one example, Xerox was an established leader in the photocopier field and by the 70s ruled the copier market, controlling the majority of the market’s share. However, within a decade, Japanese companies outwitted Xerox, and proceeded to follow suit in other industries (such as the auto industry) by launching indirect attacks on the smaller portion of the consumer base, and eventually swallowing up the entire market. The Japanese discovered that Xerox was marketing and supplying large copiers mainly to only large companies. That left millions of smaller companies using more local and less known supplies to meet their copying needs. These smaller companies couldn’t afford by purchase on the large scale of Xerox, nor did they have the physical space to store the industrial-size equipment. Enter the Japanese market with companies focusing on this weakness and entering the market focusing on the needs of the smaller organizations. Because there was no immediate effect on sales, Xerox took no notice of the market competition. As soon as the Japanese companies gained traction in this market, by focusing on the need of smaller products, lower prices, simplified technology, and distribution through office-supply dealers, tactics began to change as the Japanese continued to build upon their consumer base. The product ranges broadened with superior technology and more product choices. Towards the mid 80’s, the Japanese had made a considerable difference in the size of the market share, leaving Xerox behind and struggling. The Japanese business culture has seen significant success with a strategy of focusing in on an a smaller, overlooked, neglected, or emerging market segment and targeting in on the weaknesses of the competitor thereby gaining an advantage that affords a company the grip it needs to make gains in the market segment. Once that grip is found, the Japanese company consolidates their product’s position by mobilizing all resources and expanding into the rest of the market.

Chemistry 16 Lab Manual

Table of Contents Laboratory Safety and Laboratory Guidelines Common and Special Laboratory Equipment Materials and Other Requirements Common Laboratory Operations and Techniques Experiment 1 †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.. 10 Properties of Matter Experiment 2 †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 12 Chemical Changes Experiment 3 †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 15 Classification of Matter Experiment 4 †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢ € ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 17 Chemical Nomenclature: The Language of Chemistry Experiment 5 †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 22 Water of HydrationExperiment 6 †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 25 Gases Experiment 7 †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 27 Oxygen Experiment 8 †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦ †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 29 Heat and Volume Effects Experiment 9 †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 31 Flame Test Experiment 10 †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.. 32 Electromotive Series Experiment 11 †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦ 33 Oxidation – Reduction Reactions/ Some Aspects of Corrosion Experiment 12†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â ‚¬ ¦Ã¢â‚¬ ¦. 35 Colligative Properties GENERAL INSTRUCTIONS TO THE STUDENTS Apparatus Check each piece of apparatus, which you find in your locker from the duplicate list furnished to you by your instructor. Sign your name and submit to your instructor. The instructor signs the checklists and gives one copy to you for your safekeeping. ? Provide your locker with reliable padlock. You are responsible for all the apparatus issued to you. Towards the end of the semester you have to replace or give a deposit for any piece which you have lost or broken. If you have partners, each of you will share equally any loss or breakage of apparatus kept in your lockers and those orrowed from the stockroom. A clearance duly signed by the laboratory attendant is a requirement for taking the final examination. NO CLEARANCE, NO FINAL EXAMINATION. ? General apparatus, e. g. , Bunsen burner, thermometer, iron stand, clamps, etc. and special apparatus may be borrowed from the laboratory attendant. ? Borr owing of apparatus from the stockroom should be done during the first 30 minutes of the laboratory period. Materials and Other Requirements You have to provide yourself with the following materials and supplies besides the apparatus in the laboratory locker and the stockroom: Group |Individual | |Masking/paper tape |Tissue paper |Vials with cover (5 pcs) |Lab notebook | |Pair of scissors |Rags |Medicine dropper (3-5 pcs) |Lab manual | |Aspirator |Marking pens |Rubber tubing (2 ft) |Lab gown | |Wire gauze |Filter paper |Newspaper/scratch paper |Hand towel | |Wash bottle |Tray |Stirring rod |Mask | |Liquid detergent |Match |Corks/rubber stoppers |Goggles | |Test tube brush |Test tube holder |Padlock with keys | | Laboratory Work Laboratory work is an integral and essential part of any chemistry course. Chemistry is an experimental science – the compounds and reactions that are met in the lecture and classroom work has been discovered by experimental observation. The purpose of laboratory work is to provide an opportunity to observe the reality of compounds and reactions and to learn something of the operations and techniques. Safety is Top Priority ? All students are required to wear a lab gown during each experiment. This will be strictly enforced to avoid accidents caused by chemical spills and the like. Safety glasses, goggles or eye shields must be worn during the experiment. Contact lenses should not be worn. ? Shorts, skirts, sandals, slippers are not allowed in the laboratory. Secure long hair. ? Never taste, smell, or touch a chemical solution unless specifically directed to do so. Individual allergic or sensitivity responses to chemicals cannot be anticipated. If any chemical comes in contact with any other parts of your body or clothes, wash thoroughly with plenty of water. ? Procedures involving the liberation of volatile or toxic flammable materials shall be performed in a fume hood (e. g. , H2S, HCN). ? Never heat a flask or apparatus that is not opened to the atmosphere. Always pour waste acid, used KMnO4, organic solvents and solutions of heavy metals into their respective disposal jars, never into the sink. ? Replace the cover of every container immediately after removal of reagent. Deposit insoluble refuse such as pieces of paper, wood, glass cork in the waste basket, never into the sink or on the floor ? All accidents, injuries, breakages and spillages, no matter how minor, must be reported immediately to the instructor. ? Eating, drinking, smoking and playing inside the laboratory are strictly prohibited. Your hands may be contaminated with â€Å"unsafe† chemicals. ? Unauthorized experiments, including variations of those in the laboratory manual, are strictly prohibited.If your chemical intuition suggests further experimentation, consult with your instructor first. ? Unauthorized person(s) shall not be allowed in the laboratory. ? Maintain a wholesome, businesslike attitude. Horseplay and other careless ac ts are prohibited. ? The tabletop must be cleared of unnecessary materials. Put all bags and books in designated areas. ? Solids, water and other liquids spilled on your tabletop must be cleaned up as soon as possible ? No electronic equipment (laptops, ipod, mp3s, cellphone, etc. ) will be switched on while working in the lab. For Economic Reasons ? Always turn off the burner as soon as you are finished using it. Get only the amount of the reagent, which you need in the experiment. Use spatula for solid reagents and pipet for liquid ones. ? Never return any excess reagent to a bottle, unless specifically directed, to avoid contamination Before leaving the room, see to it that: ? Your locker is locked ? Your assigned water and/or gas outlet(s) are turned off ? The tabletop and the floor near your working area are clean and dry Collecting Data ? Record all data as they are being collected on the laboratory notebook. Data on scraps of paper (such as mass measurements in the balance ro om) will be confiscated. ? Record the data in ink as you perform the experiment. If a mistake is made in recording data, cross out the incorrect data entry with a single line (do not erase, white out or obliterate) and clearly enter the corrected data nearby. If a large section of data is deemed incorrect, write a short notation as to why the data are in error, place a single diagonal line across the data, and note where the correct data are recorded. Assessment: Evaluation of the students’ progress will be based on performance laboratory experiments; written reports of laboratory work and exams. The distribution is as follows: Exams35% Performance/ Attendance15% Written Laboratory report35% Pre-laboratory write-up/ Data notebook15%Laboratory Course Policies: 1. Arrive on time. The overview and description of the lab exercise, and the questions you need to answer in your written reports are usually given at the start of each session. These could be valuable to the success of you laboratory course. 2. Note all laboratory safety policies at all times. You are required to wear lab coats and safety glasses while in the lab. You must wear your protective gear at all times that any lab work is underway. Failure to observe safety precautions may result in your being dismissed from the laboratory class. 3. Request all chemicals and materials that you may need from the stock room at least 30 mins. head of the scheduled experiment. At this stage in your studies, you are expected to be able to work independently and responsibly. 4. Written reports of laboratory work are due at the start of the following lab session. Reports that are late will be penalized for each day of late submission(10% deduction per day). 5. Laboratory techniques, including your preparedness and participation in each laboratory activity, good note-keeping and ability to work well with your partner will be graded accordingly. 6. Read and plan you work before every laboratory class. Prepare a p re-laboratory write-up at the start of the lab period and prior to starting your laboratory work.You will not be allowed to perform the experiment without a pre-lab write up. The pre lab should include the following sections,: Experiment #, Title of Experiment, Date, Objectives of the Experiment’ Theoretical Framework, Materials and Methods, Expected Outcome. Sign and Date each pre-lab write-up. During the conduct of the experiment, record all your raw data in the same notebook. 7. Written Reports should be written on a short-sized bond paper and will have the following components: Name, Laboratory partner/s, Discussion of Results, Calculation/s(if any), Question/s, and Answer/s, Conclusion/s, Comment on you and your partner’s contribution towards the successful completion of the laboratory activity.Submit your lab report as a group, write your group number and experiment number as the subject of the email. COMMON LABORATORY OPERATIONS AND TECHNIQUES 1. BUNSEN BURNER A . Lighting the Burner a. Examine the parts of the Bunsen burner. Make a sketch of the burner, label and state the function of its parts. b. Attach the rubber tubing from the burner to the gas outlet on the lab bench. Bring the lighted match or striker up 4-5 cm above the barrel while opening the gas valve. c. Adjust the gas supply so as to have a flame of not more than 8 cm high. Close the air holes of the burner and observe the appearance of the flame. Hold the porcelain dish on this flame for a moment.What is deposited on the porcelain dish? d. Open the air holes until the flame is pale blue and has two or more distinct cones. A slight buzzing or roaring sound is characteristic of the hottest flame from the burner. Too much air may blow the flame out. Adjust the air intake until the roaring stops. What is the effect on the flame upon opening of the air holes? Does this type of flame have the same effect on the porcelain dish? Why? Spray powdered charcoal on the flame and note its effect. What makes the flame luminous? e. When the best adjustment is reached, three distinct cones are visible. Always use this kind of flame unless directed otherwise. f.Extinguish the flame when it is not being used, by closing the gas valve. B. Determining the Flame Temperatures a. Wet a piece of cardboard and hold it vertically through the center of the flame, with the lower end of the cardboard resting against the top of the burner. b. Remove the cardboard as soon as it shows a tendency to char. From the scorched portions note the relative temperature of the different parts of the flame. c. Draw a sketch of the flame to illustrate the different regions. 2. GLASS MANIPULATION A. Cutting a. Place the glass tubing flat on the table. Make a single scratch with a sharp triangular file 30cm from one end of the glass tubing. b.Grasp the glass tubing with both hands and place the thumbs one cm beside the scratch. Position the thumbs such that they are opposite the scratch. c. Break th e glass tubing by applying a gentle pressure. If it does not yield to gentle pressure, make a deeper scratch. d. The edges of the cut glass tubing are sharp and should be polished by rotating it at the non-luminous portion of the burner’s flame. This is to prevent the sharp edges of the glass from ruining corks and rubber tubing as well as cutting your fingers. B. Bending a. Take a piece of glass tubing about 30 cm long and hold it lengthwise over the flame. b. To bend the glass tubing properly, it must be heated uniformly over a length of 5 to 8 cm.This can be done using a flame spreader. c. Roll the tube back and forth until it has become quite soft. d. When it has become sufficiently soft, (i. e. , the glass tubing begins to take a pink color and sag gently) take it out of the flame. e. Bend quickly to the desired angle (30 ° or 90 °) and hold until it hardens. Try to get a good idea of the angle before you begin to work so that you may work rapidly and secure the desi red bend at once. f. Make one right angle and one 30O bent glass tubing. NOTE: Reheating and re-bending produces unsightly and often frail apparatus. C. Drawing Out a. Roll the center of a 10cm glass tube over the flame until it softens.The tube must be constantly rotated, to prevent the softened portion from sagging. b. Quickly remove it from the flame, and while holding it in a vertical position, gently pull the ends apart until the bore at the stretched portion is of the desired diameter. c. Cut to the desired nozzle length and fire polish the tip. D. Boring corks and rubber stoppers a. Select a cork that will fit into the mouth of the flask or test tube. b. Soften by rolling it between the tabletop and the palm of your hand. Select a sharp cork borer one size smaller than the glass tube that will be inserted. c. Place the cork on the desk and gently twist the borer in until it is halfway through the cork.Then withdraw the borer and finish the hole from the other end of the cork. d. Smoothen the hole in the cork with a round file. e. If the hole is too small, enlarge it by carefully filing with a round file. Only small adjustment should be made in this way. f. Rubber stoppers are bored in the same manner as mentioned. Select a very sharp borer one size larger than the hole to be made, and wet it with glycerin. Proceed as in boring the cork, but do not apply too much pressure. E. Inserting a glass tubing through a cork/rubber stopper NOTE: This operation is the most common cause of accidents in the laboratory. a. Wet the cork and the glass tubing with water. b.Place your hand on the tubing 2-3 cm away from the stopper. Protect your hand with a towel. c. Simultaneously twist and push the tubing slowly and carefully through the hole. 3. CLEANING OF GLASSWARE a. Clean all glassware with a soap or detergent solution. Use a brush if appropriate. b. Once the glassware is thoroughly cleaned, rinse several times with tap water and then once or twice with distilled w ater. c. Roll each rinse around the entire inner surface of the glass wall for a complete rinse. Discard each rinse through the delivery point of the vessel (e. g. , beaker spout). d. Invert the clean glassware on a clean paper towel or rubber mat to dry.Do not dry any glassware over direct flame. e. The glassware is clean if, following the final rinse, no water droplets adhere to the clean part of the glassware. f. If you must use a piece of glassware while it is still wet, rinse it with the solution to be used in the manner described in step 5c below. 4. TRANSFERRING OF LIQUIDS/SOLUTIONS a. When the liquid or solution is to be transferred from a reagent bottle, remove the glass stopper and hold it between the fingers of the hand used to grasp the reagent bottle. Never lay the glass stopper on the laboratory bench; impurities may be picked up and thus contaminate the liquid when the stopper is returned. b.To transfer a liquid from one vessel to another, hold a stirring rod against the lip of the vessel containing the liquid and pour the liquid down the stirring rod, which, in turn, should touch the inner wall of the receiving vessel. Return the glass stopper to the reagent bottle. c. Do not transfer more liquid than is needed for the experiment; do not return any excess liquid or unused liquid to the original reagent bottle. 5. MEASURING VOLUME OF LIQUID/SOLUTIONS a. The eye should always be level with the meniscus when you are making a reading. b. For measurements of clear or transparent liquids/solutions, the volume is read using the lower meniscus. For colored liquids/solutions, the upper meniscus is used. 6. HEATING A LIQUID/SOLUTION IN A TEST TUBE NOTE: Never fix the position of the flame at the base of the test tube and never point the test tube to anyone.The contents may be ejected violently if the test tube is not heated properly. a. The test tube should be less than one third full. Hold the test tube with a test tube holder at an angle of about 45? w ith the cool flame. A cool flame is a nonluminous flame supplied with a reduced amount of fuel. b. Move the test tube circularly in and out of the flame, heating from top to bottom. 7. PRECIPITATION a. Place 2 mL of sodium chloride solution in a test tube and slowly add 2 mL of silver nitrate solution. Write the balanced chemical equation for this reaction. NOTE: Be careful in handling silver nitrate solution. This solution may leave dark stains on skin, clothes or bench top. b.The solid formed is the precipitate and in this case, the slightly soluble silver chloride. Allow the precipitate to settle. c. Add a few drops of silver nitrate solution. Continue addition until no precipitation is observed. Divide the mixture into two portions and keep these for procedure 8. 8. SEPARATING A LIQUID FROM A SOLID A. Filtration a. Preparation of the filter paper to be used for gravity filtration: i. Cut out a 5† x 5† piece of filter paper. Fold the filter paper in exact halves and f old it again crosswise into two. ii. Make a small tear in one corner. This tear seals the paper against the inflow of air to the underside of the filter paper. iii.Open the folded paper so as to form a cone. iv. Place it in a funnel. Moisten it with a little water and press it against the top wall of the funnel to form a seal. The filter paper must always be smaller than the funnel. v. Support the funnel with a clamp or a funnel rack. b. Transfer the precipitate formed from the previous activity by carefully pouring the mixture, with the aid of a glass rod, into the filter paper. The liquid that passes through the liquid is called the filtrate. c. The tip of the funnel should touch the wall of the receiving beaker to reduce any splashing of the filtrate. d. Fill the bowl of the funnel until it is less than two-thirds full. e.Always keep the funnel stem full with the filtrate; the weight of the filtrate creates a slight suction on the filter in the funnel, thus this hastens the filtr ation process. f. Set aside both precipitate and filtrate for the next two activities. B. Decantation a. Transfer the precipitate retained in the filter paper into a beaker by rinsing the filter paper with jets of water from a wash bottle. b. Allow the solid to completely settle at the bottom of the vessel for several minutes. c. Transfer the liquid (called supernatant) into another container with the aid of a clean stirring rod. d. Do this slowly so as not to disturb the solid. Is this method applicable for the separation of all solid-liquid mixtures? Why? e. Rinse the precipitate with water and decant again. f. Which of the two separation methods (i. e. decantation or filtration) is better in isolating the precipitate? Why? E. Evaporation a. Pour the filtrate obtained from 8A into the evaporating dish. Place the evaporating dish on a wire-gauze supported on an iron ring clamped to an iron stand. Heat the dish over a cool flame. b. Continue heating until crystals begin to appear. C over the dish with a watch glass and allow the contents to cool. The solid remaining after evaporation is called the residue. What is the composition of the residue? 9. WEIGHING a. Weigh 0. 5 g of sand. Weighing may be done on platform balance or on an analytical balance. Rough weighing (to the nearest half gram), can be done on the platform balance.The analytical balance is used to get more accurate mass measurements. b. The properties of the substance will often determine the nature of the container where it is to be weighed. Use a weighing paper, a watch glass, a beaker, or some container to measure the mass of the chemicals. c. Do not place the chemicals directly on the balance pan. When in doubt as to what container to use, ask your instructor. TECHNIQUE IN HANDLING CHEMICALS d. A reagent is a substance which has a definite composition and a set of specific properties. The strong solutions are marked â€Å"concentrated† and the weak solutions, â€Å"dilute†. Some examples of the reagents are: Sulfuric acidH2SO4Ammonia NH3Hydrochloric AcidHClSodium hydroxide NaOH Acetic acidCH3COOHCalcium hydroxide Ca(OH)2 e. Before getting the desired amount, read the label twice to be sure it is the correct chemical at the right concentration. Transfer the needed amount into the receiving container. Once removed, these should never be returned. f. Do not take out more than what is needed to minimize waste. Do not return excess chemicals to the reagent bottle. In pouring reagents from bottles, don’t place the stopper on the table but hold it between your fingers. g. Never touch, taste or smell chemicals unless specifically directed to do so. ExPERIMENT Properties of MatterThis experiment presents several of the properties used to identify a sample of matter. The data gathered are interpreted by the use of some quantitative method. For safety and accuracy of results, the experimenter should make sure that all set-ups used should be properly checked for possible connection leaks and other errors. Stirring rod should be used to ensure uniform distribution of heat when heating liquids in an open container. The heat should also be regulated especially when heating closed set-ups. Laboratory techniques included are: measurement and transferring of liquids, weighing and heating of liquids and solids. MATERIALS AND APPARATUS 25 or 50-mL graduated cylinder |Thermometer |Cork and/or rubber stoppers | |50-mL distilling flask |Bunsen burner |Top loading balance | |250-mL beaker |Rubber tubings |Condenser | |25-mL Florence flask |Iron stand |Oil | |Test tube |Iron ring |Sulfur powder |2-3 iron clamps |Wire gauze |Isopropyl alcohol | | | |Lead pellets | PROCEDURE 1. BOILING POINT a) Measure 25 mL of isopropyl alcohol and record the initial temperature. 32 degrees a) Transfer it into a 50-mL distilling flask. Assemble the distillation set-up (consult the instructor). b) Warm the set-up gently with a Bunsen burner. Take temperature readings at one-minute time intervals until the liquid begins to boil, and two more minutes thereafter. c) Continue distilling until the flask is almost dry. Pour off the liquid still present in the flask. ) Transfer the distillate into the distilling flask and repeat the distillation process. e) Make a graph of your data with time on the x-axis and temperature on the y-axis. Compare the two graphs. f) Determine the boiling point of the liquid from the graphs. Look for the standard boiling point of isopropyl alcohol and get the % error of the boiling point obtained experimentally. 2. MELTING POINT a) Place about 1-gram of sulfur powder into a dry test tube. Clamp the test tube vertically into the oil bath. See to it that the solid is below the oil level. a) Hang the thermometer into the test tube such that it is covered by the solid and does not touch the sides and bottom of the test tube. ) Heat the oil bath gradually and take temperature readings at one-minute intervals until the solid has co mpletely liquefied, and two more minutes thereafter. c) Make a graph of your data with time on the x-axis and temperature on the y-axis. Determine the melting point of sulfur from the graph. Look for the standard melting point of sulfur and get the % error of the melting point obtained in the experiment. NOTE: Stir the oil bath so that the heat is uniformly distributed. 3. DENSITY OF A LIQUID a) Clean and dry the Florence flask. Weigh the dry flask and the rubber stopper on a top loading balance and record the mass. b) Fill the flask with distilled water until the liquid level is nearly to the brim.Put the stopper on the flask in order to drive all the air and excess water. Work the stopper gently into the flask so that it is firmly seated into position. c) Wipe any water on the outside of the flask and soak up all excess water from around the top of the stopper. d) Again, weigh the flask, which should be completely dry on the outside and full of water, and record the mass. e) Calcu late for the precise volume of the flask given the standard density of water, the temperature of the laboratory and the mass of water in the flask. f) Empty the flask, dry it and fill it with isopropyl alcohol. Stopper and dry the flask as you did when working with water.Record the weight of the flask filled isopropyl alcohol. g) Calculate the density of isopropyl alcohol and determine the % error using its standard density. 4. DENSITY OF A SOLID a) Use the same flask from the previous procedure for this part. Dry the flask completely and add small chunks of lead metal into the flask until it is about half full. b) Weigh the flask, with its stopper and the metal, and record the mass. Determine the mass of the metal in the flask. c) Fill the flask with water, leaving the metal in the flask, and then replace the stopper. Roll the metal around the flask to make sure that no air is trapped between the metal pieces. ) Refill the flask if necessary, and then weigh the dry stoppered flask full of water plus the metal sample. e) Compute for the density of the lead using the data obtained in this section and in part 3. Determine the density of the metal and compute for the % error. QUESTIONS 1. Interpret the graphs obtained in parts 1 and 2. What changes occur at the different regions of the graph? 2. What kind of properties are boiling point, melting point and density? 3. Which of these properties may be used to identify a sample of matter? Why? 4. Is one property sufficient to establish the density of the substance? 5. What is the identity of the distillate in Part 1? What is your basis?ExPERIMENT CHEMICAL CHANGES This experiment presents different types of chemical change. Some quantitative methods are included to emphasize proper data handling and interpretation of results. Formula writing and setting up of simple chemical equations are introduced. It is to be emphasized that the experimenter should always take note of any physical evidence that a chemical reaction is taking place. Such physical evidences include the formation of a precipitate, change in color of the solution or precipitate, evolution of a gas, and absorption or evolution of heat. ? Evolution of gas. This evolution may be quite rapid or it may be a â€Å"fizzing† sound. Appearance or Disappearance of precipitate. The nature of the precipitate is important; it may be crystalline, it may have color, it may merely cloud a solution. ? Evolution or Absorption of Heat. The reaction vessel becomes warm if the reaction is exothermic or cools if the reaction is endothermic. ? Change in color. A substance added to the system may cause a color change. Also included are the common laboratory operations such as measurement and transferring of liquids, precipitation, decantation, filtration, washing and transferring of precipitates, drying of solids, weighing, testing for acidity and basicity, and testing for completeness of a reaction.This experiment also emphasizes the need for gr adual mixing of reactants to make certain the maximum recovery of the product, and the importance of washing, to ensure the purity of the product. MATERIALS AND APPARATUS |50-mL graduated cylinder |Watch glass |Zinc dust | |250-mL beaker |Evaporating dish |0. 100 M Cu(NO3)2 | |250-mL Erlenmeyer flask |Pair of scissors |6. 00 M NH3 | |Funnel |Filter paper |6. 0 M NaOH | |Bunsen burner |Litmus paper |6. 00M HCl | |Stirring rod |Medicine Dropper |6. 00 M H2SO4 | PROCEDURE 1. Precipitation of Copper (II) hydroxide a) Measure 10-mL of 0. 100 M Cu(NO3)2 solution in a 250-mL beaker. a) Add dropwise with constant stirring about 0. 5 mL 6. 00 M NaOH solution. b) Place a piece of litmus paper on a dry watch glass and moisten it with the solution using a stirring rod. c) If it is not yet alkaline, add more NaOH. Record any change in color of the solution and describe the precipitate. 2.FORMATION OF COPPER (II) OXIDE a) Boil the contents of the beaker in part 1 for about 2 minutes with constant stirring to prevent â€Å"bumping† which may result in loss of material. The precipitate should change in color. b) Allow the copper (II) oxide precipitate to settle. Take note of the change in color of the precipitate. c) Test the supernate with a few drops of 6. 00M NaOH. If cloudiness is observed, continue the addition of the base until precipitation is complete. d) Heat the solution again with constant stirring, until all the precipitate has changed in color. Record the color changes that occur. What is the evidence of complete precipitation?What is the composition of the supernate? 3. CONVERSION OF COPPER (II) HYDROXIDE TO COPPER (II) SULFATE a. Let the precipitate settle until the supernate is clear. Decant the supernate through a filter paper into the Erlenmeyer flask. b. Wash the precipitate in the beaker using 10 mL of water. Let the precipitate settle and decant the wash water through the filter paper into the Erlenmeyer flask containing the filtrate. c. Repeat the process, so that the precipitate is washed a total of four times. d. Wash the same filter paper with about 1 mL 6. 00 M H2SO4 dropwise, catching the filtrate in the beaker containing copper (II) oxide precipitate. e.Rotate or stir the contents of the beaker to dissolve the solid. Add some more H2SO4 to dissolve the precipitate completely. f. Wash the filter paper again, this time with 10 mL water, catching the wash water in the same beaker. Record your observations. 4. REDUCTION OF Cu (II) IONS TO METALLIC COPPER a. To the solution (from 3), gradually add with constant stirring, about 1. 5 g zinc dust in minute amounts. CAUTION: Stir until no further reaction is observed before adding more zinc to make the solution colorless. b. Test for the completeness of the reaction by adding a few drops (1-2 drops) of the solution into a test tube containing about 1 mL of 6. 0 M NH3. If a colored solution is obtained, compare this with the control solution (prepare by adding a drop of 0. 100 M Cu(NO3)2 solution and 2 drops of NH3 to 1 mL water) and add more zinc into the solution with constant stirring. Repeat the process until the test with ammonia solution gives a colorless solution. c. Decant and discard the supernate in 4-b. Wash the precipitate in the beaker twice, each time using 10-mL portions of water. Decant and discard the wash water after each washing, taking care not to lose any solid. d. To the precipitate, add 10 mL water and 2 mL 6. 00 M HCl slowly and stir the contents until no more change is observed.Let the precipitate settle, decant and discard the supernate into a waste acid jar. e. Wash the precipitate twice, each time using 10-mL portions of water. Decant and discard the wash water. f. Transfer the entire solid in the beaker to a previous weighed filter paper. Use as little water as possible to wash out the solid from the beaker. Discard the filtrate and wash water. g. Fold the filter paper containing the solid and press this between pieces of dry f ilter paper to remove most of the water. Place the partially dried filter paper containing the solid on a watch glass, and air dry in your locker until the next period. Weigh the solid and the filter paper.Record all masses obtained. 5. OXIDATION OF COPPER a. Place a pinch of the weighed solid in an evaporating dish and heat the dish directly over a Bunsen burner. Observe and record your results. b. Submit the remaining solid, properly packaged and labeled, to your instructor. QUESTIONS 1. What type of process and/or chemical changes is observed in procedures 1-5? 2. Why must zinc be added very gradually to the solutions in procedure 4. a? 3. What is the purpose of the test using ammonia solution? 4. Why must HCl be added to the solid after the reaction with zinc dust is completed? 5. Why is it not advisable to dry the copper directly over a Bunsen flame? 6.Calculate the percent recovery in the experiment. Does your result refute the law of conservation of matter? Explain. ExPERIMEN T CLASSIFICATION OF MATTER Matter is classified according to its various properties and the type of changes it undergoes. There are two general types of matter, substances and mixtures. Substances are further subdivided into two types, elements and compounds. Mixtures are also of two kinds, homogeneous and heterogeneous. This experiment aims to differentiate several samples of matter. The samples are subjected to different conditions like temperature and solubility in some solvents. Chemical changes are illustrated by chemical equations. MATERIALS AND APPARATUS Beakers |Evaporating dish |Sugar crystals | |250-mL Erlenmeyer flask |Test tubes |Sodium chloride | |Funnel |Thermometer |Iodine Crystals | |Bunsen burner |Mortar and Pestle |Sulfur powder | |Glass tubing |Filter paper |Lead (II) nitrate | |Watch glass |Litmus paper |Magnesium ribbon | |Medicine dropper |Starch solution | | PROCEDURE 1. ubstances, homogeneous and heterogeneuos mixtures a. Measure out one gram of refined sugar in the balance. Dissolve the sample in 50 mL tap water. Compare the appearance of the solution with that of distilled water. Set up a simple distillation apparatus using the Erlenmeyer flask, thermometer and glass tubing. b. Distill the sugar solution and make a boiling point curve on the graphing paper. Collect the sugar solution and make a boiling point curve of the isopropyl alcohol (from experiment 1). Compare the boiling point curve of the sugar solution with that of the isopropyl alcohol. Which of the two is a substance and which is a mixture? c.Test for the solubility of the powdered sulfur in water. Do the same with sodium chloride. Weigh out 0. 5 g of each chemical on the analytical balance. d. Grind the two together in a mortar. Note the appearance of the mixture. With a hand lens, observe the mixture more closely. Can you distinguish the sulfur from the sodium chloride crystals? e. Transfer half of the mixture into a beaker containing about 15 mL of water. Stir thoroughl y then filter the resulting mixture. Identify the filtrate and the residue on the filter paper. f. Transfer the filtrate into an evaporating dish. Heat this to boiling. When the crystals begin to form, cover the dish with watch glass to prevent sputtering.When the crystals are almost dry, stop heating the dish. g. Heat the other half of the original mixture in an evaporating dish until melting is observed. Examine the resulting product closely using a hand lens. Can you now differentiate the two components? Test its solubility in water. Record all observations. 2. ELEMENTS AND COMPOUNDS a. Take two small crystals of iodine. Place one crystal inside the test tube and heat it gently. Compare the heated and the unheated crystals with respect to state, color, solubility in water and their behavior in starch solution. b. Take a pinch of lead nitrate crystals. Observe carefully and list down its observable physical properties.Heat it over a burner, gently at first, and then strongly after wards until no further change is observed. List down your observations. 3. METALS AND NON-METALS a. Clamp a medium-sized test tube horizontally. Take a piece of magnesium ribbon and insert one end into a 10-cm piece of glass tubing. b. Heat the magnesium ribbon. When it begins to burn, insert the burning magnesium ribbon into the test tube until the metal has burned completely. c. Dissolve the residue in 3-mL water. Test the acidity and basicity of the solution with litmus paper. Repeat using a pinch of sulfur. QUESTIONS 1. Write all chemical equations involved. 2. Does the appearance of the sugar solution differ from that of distilled water? 3.In part 1, which is an example of a homogeneous and heterogeneous mixture? How are the two types of mixtures differentiated? 4. What is the composition of the crystals formed after evaporation of the filtrate in 1. b? 5. Based on the results of part 1, how are substances different from mixtures? 6. Is there any evidence that would indicate a change in the identities of each of the substances heated? What are these evidences? 7. Differentiate the oxides of metals and non-metals. 8. From the results in part 2, define elements, compounds, metals and non-metal. 9. Iodine is liberated from seaweeds by the action of sulfuric acid on the ash of the seaweeds. How is it collected from the ashes? ExPERIMENTThe Language of Chemistry: Chemical Nomenclature Chemical Nomenclature is the system of naming substances. A systematic nomenclature was established by an organization of chemists called the International Union of Pure and Applied Chemistry (IUPAC). The standardized rules developed by the IUPAC are summarized below. 1. Binary Compounds 1. 1 Binary Compounds Containing Two Nonmetals If two nonmetals form a compound, the less electronegative is written first, followed by the more electronegative element. The same pattern is used in naming; the less electronegative is mentioned first, followed by the stem of the name of the more e lectronegative ending in –ide.When more than one compound can be formed from the combination of two elements, Greek prefixes are used to indicate the number of atoms of each element. |CO2 |carbon dioxide | |PCl3 |phosphorous trichloride | |Cl2O |Dichlorine mon(o)oxide* | |HCl |Hydrogen chloride | *this is omitted when the more electronegative element begins with a vowel Greek Prefix |Number |Greek Prefix |Number | |Mono- |1 | Hexa- |6 | | Di- |2 | Hepta- |7 | | Tri- |3 | Octa- |8 | | Tetra- |4 | Nona- |9 | | Penta- |5 | Deca- |10 | 1. 2 Binary Compounds Containing a Metal and a Nonmetal The metal is always written first, in both the name and the formula. As with all binary compounds, the nonmetal takes an –ide ending.There are two types that we must consider: metals with fixed (only one) oxidation number and those with variable (more than one) oxidation numbers. 1. 2. 1 Cations Monatomic ions cations retain their names as elements. The NH4+ ion, ammonium ion is named a s if it were a metal ion because of its saltlike properties. |Li+ |lithium ion | |Na+ |sodium ion | |Mg2+ |magnesium ion | |Al3+ |aluminum ion | 1. 2. 2 Monatomic AnionsMonatomic anions are named using their names as elements and the suffix –ide. |C4- |carbide | |N3- |nitride | |O2- |oxide | |H- |hydride | 1. 2. 3 Metals with Fixed Oxidation Numbers The metals with fixed oxidation numbers are the IA and IIA, Aluminum and Zinc. All other metals have variable oxidation numbers. Note that no prefixes are used. NaCl |Sodium chloride | |Na2S |Sodium sulfide | |AgBr |silver bromide | |Al2O3 |aluminum oxide | 1. 2. 4 Metals with Variable Oxidation Numbers In a binary compound of a metal of this type with a nonmetal, the oxidation number of the metal must be indicated in the name. There are two methods of doing this, the classical system and the Stock or Roman numeral system. 1. 2. 4. Classical System This system can only be used for metals having two oxidation states. An –ic ending is used for the metal with the highest oxidation state and an –ous ending is used for the lowest. Also, the Latin name is used for iron (ferric and ferrous), copper (cupric and cuprous), tin (stannic and stannous) and lead (plumbic or plumbous). The classical system does not indicate the actual oxidation state. 1. 2. 4. 2 Stock System or Roman Numeral System The actual oxidation state is designated by a Roman Numeral placed in parenthesis immediately following the name of the metal. This is useful especially if the metal has more than two oxidation states. Formula |Classical System |Stock System | |CuCl |Cuprous chloride |copper(I) chloride | |CuCl2 |Cupric chloride |copper(II) chloride | |FeCl2 |ferrous chloride |iron(II) chloride | |FeCl3 |ferric chloride |iron(III) chloride | 1. 3. Compounds Named Like Binary Compounds Few other compounds take an –ide ending, like binary compounds. These include the following: |OH- |hydroxide |O22- |peroxide | |CN- |cyanide | |NH2- |amide | |I3- |triiodide | |N3- |azide | 1. 4. Trivial Names Some common binary compounds are assigned trivial names that have been assigned arbitrarily. These are universally used that they are allowed by the IUPAC rules of nomenclature. H2O |water | |NH3 |ammonia | |PH3 |phosphine | |AsH3 |arsine | 1. 5. Binary Acids A binary compound composed of hydrogen with a more electronegative element can act as a binary acid in water solution. For acids of this types, the prefix hydro- is added, and then the –ide ending is replaced by –ic acid. HF |hydroflouric acid | |HCl |hydrochloric acid | |HBr |hydrobromic acid | |HI |hydroiodic acid | 2. Ternary and Higher Compounds 2. 1 Oxyacids and Salts Oxyacids are composed of a nonmetal with more than one oxidation state, along with hydrogen and oxygen. A salt of oxyacid is formed when one or more of the hydrogen ions of an acid is replaced by a cation. The prefix hypo-, is used to denote the lowest oxidation state of the non metal with the characteristic ending –ous and the prefix per- is used to denote the highest oxidation state with the ending –ic. For acids whose names end in –ous, the corresponding salt ends with the suffix –ite, and those whose names ends in –ic, the name of the salt ends in –ate. Acid |Oxyanion |Salt | |H2SO3 |sulfurous acid |SO32- |sulfite |Na2SO3 |sodium sulfite | |H2SO4 |sulfuric acid |SO42- |sulfate |Fe2SO4 |iron(II) sulfate | |HClO |hypochlorous acid |ClO- |hypochlorite |NaClO |sodium hypochlorite | |HClO2 |chlorous acid |ClO2- |chlorite |KClO2 |potassium chlorite | |HClO3 |chloric acid |ClO3- |chlorate |NaClO3 |sodium chlorate | |HClO4 |perchloric acid |ClO4- |perchlorate |NaClO4 |sodium perchlorate | 2. 2 Salts of Polyprotic Acids These types of salts are formed when one or more hydrogen ions in polyprotic acids or acids with more than one replaceable H+ ion (e. g. , H2S, H3PO4, H2SO4) is/are replaced by metal ions. In naming, the word hydrogen is added to the name of the oxyanion. |NaH2PO4 |sodium dihydrogenphosphate |Na2HPO4 |disodium hydrogenphosphate | |Na3PO4 |trisodium phosphate | |NaHS |sodium hydrogensulfide | EXERCISES 1. Name the following. a. FeI2___________________________________ b. I2___________________________________ c. FeCl3___________________________________ d. Fe2(SO4)3___________________________________ e. FeS___________________________________ f. NCl3___________________________________ g. H2CO3___________________________________ h. CaCO3___________________________________ i.Be2C___________________________________ j. SnSO4___________________________________ k. (NH4)2S___________________________________ l. N2O4___________________________________ 2. Write the correct chemical formula a. Barium chloride___________________ b. Stannous nitrate___________________ c. Stannic nitrate___________________ d. Aluminum carbide___________________ e. Magnesium phosphate___________________ f. Nitrogen dio xide___________________ g. Ammonium sulfate___________________ h. Barium carbonate___________________ i. Sodium carbonate___________________ j. Calcium hydrogen phosphate___________________ k. Disulfur dichloride___________________ 3. Complete the following table Formula |Name as acid |Formula of sodium |Name of salt | | | |salt | | |HNO3 | | | | |HNO2 | | | | |HBrO | | | | |HBrO2 | | | | |HBrO3 | |NaBrO3 | | |HBrO4 | | | | 4. Name the following as binary compounds or as salts from the anions of polyprotic or oxo acids. a. NaIO___________________________________ b. K2HPO4___________________________________ c. Na2SO3___________________________________ d. KMnO4___________________________________ e.BaSO3___________________________________ f. FeSO4___________________________________ g. HClO3___________________________________ h. Na2SO4___________________________________ i. Fe(NO3)3___________________________________ j. Ca(ClO2)2___________________________________ 5. The spaces below rep resent portions of some of the main groups and periods of the periodic table. In the proper squares, write the correct formulas for the chlorides, oxides and sulfates of the elements of Groups 1, 2 and 3, respectively. Likewise, write the formulas of the compounds of sodium, calcium and aluminum with the elements of Groups 6 and 7. Two of the squares have been completed as examples. Period |Group 1 |Group 2 |Group 3 |Group 6 |Group 7 | |2 | LiCl | |(Omit sulfate) | | | | |Li2O | | | | | | |Li2SO4 | | | | | |3 | | | |Na2S | | | | | | |CaS | | | | | | |Al2S3 | | |4 | | | | | | | | | | | | | | | | | | | | |5 | | | | | | | | | | | | | | | | | | | | ExPERIMENT WATER OF HYDRATION Most solid chemical compounds will contain some water if they have been exposed to the atmosphere for any length of time.In most cases the water is present in very small amounts, and is mere adsorbed on the surface of the crystals. Other solid compounds contain larger amounts of water that is chemically bound in the crystal. These compounds are usually ionic salts. The water that is present in these salts is called the water of hydration and is usually bound to the cations in the salt. In this experiment you will study some of the properties of hydrates. You will identify the hydrates in a group of compounds, observe the reversibility of the hydration reaction, and test some substances for efflorescence or deliquescence. Finally you will be asked to determine the amount of water lost by a sample of unknown hydrate on heating.From this amount, if given the formula or the molar mass of the anhydrous sample, you will be able to calculate the formula of the hydrate itself. MATERIALS AND APPARATUS |watch glass |iron ring |crucible tongs | |test tubes |iron stand |triangular clay | |Bunsen burner |crucible |desiccators | PROCEDURE 1. Identification of Hydrates. Place about 0. g of the compounds listed below in small, dry test tubes, one compound to a tube. Observe carefully the behavior of each c ompound when you heat it gently with a burner flame. If droplets of water condense on the cool upper walls of the test tube, this is evidence that the compound may be a hydrate. Note the nature and the color of the residue. Let the tube cool and try to dissolve the residue in a few cm3 of water, warming very gently if necessary. A true hydrate will tend to dissolve in water, producing a solution with a color very similar to that of the original hydrate. If the compound is a carbohydrate, it will give off water on heating and will tend to char.The solution of the residue in water will often be caramel colored. Nickel chloride Potassium chloride Sodium tetraborate (borax) Sucrose Potassium dichromate Barium chloride 2. Reversibility of Hydration. Gently heat a few crystals ~0. 3 g, of hydrated cobalt (II) chloride, CoCl2(6H2O, in an evaporating dish until the color change appears to be complete. Dissolve the residue in the evaporating dish in a few cm3 of water from your wash bottle. Heat the resulting solution to boiling (CAUTION! ), and carefully boil it to dryness. Note any color changes. Put the evaporating dish on the lab bench and let it cool. 3. Deliquescence and Efflorescence.Place a few crystals of each of the compounds listed below on separate watch glasses and put them next to the dish of CoCl2 prepared in Part B. Depending upon their composition and the relative humidity (amount of moistures in air), the samples may gradually either lose water of hydration to, or pick up water from, the air. They may also remain unaffected. Any changes in crystal structure, color, or appearance of wetness should be noted. Observe the samples occasionally during the rest of the laboratory period. Since the changes tend to occur slowly, your instructor may have you compare your samples with some that were set out in the laboratory a day or two earlier. Na2CO3(10H2O (washing soda) CaCl2KAl(SO4)2(12H2O (alum) CuSO4(5H2O 4. Percent Water in a Hydrate. Clean a porcelain cr ucible and its cover with 6 M HNO3. Any stains that are not removed by this treatment will not interfere with this experiment. Rinse the crucible and cover with distilled water. Put the crucible with its cover slightly ajar on a clay triangle and heat with a burner flame, gently at first and then to redness for about 2 minutes. Allow the crucible and cover to cool, and then weigh them to 0. 001 g on an analytical balance. Handle the crucible with clean crucible tongs. Obtain a sample of unknown hydrate from the stockroom and place about a gram of sample in the crucible.Weigh the crucible, cover, and sample on the balance. Put the crucible on the clay triangle, with the cover in an off-center position to allow the escape of water vapor. Heat again gently at first and then strongly, keeping the bottom of the crucible at red heat for about 10 minutes. Center the cover on the crucible and let it cool to room temperature. Weigh the cooled crucible along with its cover and contents. Exami ne the solid residue. Add water until the crucible is two thirds full and stir. Warm gently if the residue does not dissolve readily. Does the residue appear to be soluble in water? DATA AND OBSERVATIONS A. Identification of Hydrates |Water appears |Color of residue |Water soluble |Hydrate | |Nickel chloride | | | | | |Potassium chloride | | | | | |Sodium tetraborate | | | | | |Sucrose | | | | | |Potassium dichromate | | | | | |Barium chloride | | | | | B. Reversibility of Hydration Summarize your observations on CoCl2(6H2O. Is the dehydration and hydration of CoCl2 reversible? C. Deliquescence and Efflorescence |Observation |Conclusion | |Na2CO3(10H2O | | | |CaCl2 | | | |KAl(SO4)2(12H2O (alum) | | | |CuSO4(5H2O | | | D. Percent water in a Hydrate |Mass of crucible and cover | | |Mass of crucible, cover, and solid hydrate | | |Mass of crucible, cover, and residue | | Mass of solid hydrate | | |Mass of residue | | |Mass of water lost | | |Percentage of water in the unknown hydrate | | |Formula mass of anhydrous salt (if furnished) | | |Number of moles of water per mole of unknown hydrate | | ExPERIMENT GASESThis experiment illustrates three of the common gas laws: Boyle’s law, Charles and Gay-Lussac’s law and Graham’s law. Boyle’s law states that the volume, V, of a certain quantity of an ideal gas is inversely proportional to its pressure, P, at a given temperature and amount of gas. Charles’ and Gay-Lussac’s law states that the volume of a gas is directly proportional to the absolute temperature, at a certain pressure and amount of gas. Graham’s law describes that the velocity of an ideal gas is inversely proportional to the square root of its molar mass. The first two gas laws will be validated using plots of the properties involved. Graham’s law will be determined by comparing the velocities of two sample gases. MATERIALS AND APPARATUS Glass syringe |250 or 400-mL beaker |Black cardboard | |Syringe hol der |Iron stand |Ruler | |Thermometer |Iron ring |Graphing paper | |Glycerol |Wire gauze |Concentrated HCl | |Modeling clay |Glass tubing

An Integral Part Of A Democratic State Essay

Elections are an integral part of a democratic state. The argument is sometimes put forward that participatory democracy should be the basis for a whole political system, a replacement for parliamentary democracy. Representative institutions based on one person one vote determine the principles and general direction of an elected government. Participatory democracy can monitor the work of the executive and state apparatus. The importance of process Take waste. The same principles of daily and ongoing democratic processes could be applied to education, transport, and social services. Formally, representative democracy does have the final say. Participatory democracy, in a complementary relationship to electoral power, thus has the potential to move societies further towards the democratic ideals of popular control and political equality. I believe that a strong and aware civil society keeps their elected representatives on their toes, by asking questions through organized interest groups all of whom press their causes on government, sometimes through political parties and through independent lobbies. Participatory democracy provides a real alternative, or complement, to elected power: a distinct and organized public sphere in which the demands of the people can be articulated, developed and negotiated between each other, and finally negotiated with the local or other relevant state institutions. Conditions for participatory growth In order for participatory democracy to attain legitimacy and reinvigorate democratic politics as a whole, certain conditions need to be in place. The aim for participatory institutions is essentially to share decision-making power with government, to exercise some control over the work of state institutions and to monitor the implementation of government’s decisions. The process must get results; in the sense that these parties are able to use their electoral legitimacy to emphasize the importance of the participatory process. If participatory democracy spreads, the institutions of representative government may lose some power to the new participatory sphere. The new systems of managing public resources through a combination of electoral and participative democracy bring an overall gain in democratic legitimacy and as a result, potentially, in democratic power. I believe that participatory democracy and the election process should be in the forefront in advocating transparency among government officials and their constituents. It is also important that citizens should be more aware and involved because the main argument of a democracy is the constant participation of people with regards to political debates and decisions. Without the people’s involvement, government leaders will not hold positions of power in the first place. Grassroots parties that are well represented inside the halls of congress should not just advocate the things that they think are important, but they also should stand as role models for the people who do not have the chance everyday to sit in a position of power. It is inevitable in a democracy that sometimes elections become an issue in itself. With this in my mind, I believe that people who go out to vote and those who pass on the opportunity to vote must always respect the final verdict whether it favors them or not. Yes, it is an issue because sometimes it is very easy for people to point fingers and start up a rumor that an election is fixed. For me, the only solution for this issue is to improve the way elections are being held. As a voter myself, it would also help if we encourage our society to go out and vote. Apathy sometimes can backfire on us. We should take care of our rights as citizens and voters to be more aware of the situation and act accordingly. By doing so, we protect ourselves from being short changed by the very institution, which the sole purpose is to protect us.

A Safe Place

The day she found the baby she was carrying was a woman, her fears came back. She remembered that she returned home after making a promise, her stomach was tied, and her hands were strained. He almost killed her when he came home from work that night. He was waiting for a boy. Carol cried because he was thrown away by the coffee table. It is a miracle that Sofia survived. It is a miracle that she survived. When she stared at Ed by her she remembered that warm blood cried in her eyes. She has at least eight books in hand, then she goes to the blind man. This is her safe place. The staff is safe and secure for other curious people. She does not want to speak far away. Just being reading and relaxing, in the same building. Usually there is no one. Even if the armchair or table looks old, there are scratches and holes. Beneath the window in the attic, there are beautiful rolling wooden chairs on the corner. The second day after writing the assignment - Sucking the dice in the library, sh e can read the text inside There are few safe places in our culture. Avoid continuous noise such as news, colleagues, opinions, advertisements. Our smartphone has already decided this. (Previously the shower was a safe place for me, but I have not even worried about the flooding of the new iPhone so I even even started holding my news articles with the Kindle app!) Culture, I Does not talk about deeply embedded religious buildings and references that are penetrating many places of Western civilization. These cultures are not actually personalized as we imagined, but they are conveyed through a larger and broader comprehensive culture that no one can see. of Francis Collins is passionate about finding a safe place for confused Christians to find answers to their questions about Bible truth and science. I am anxious for a safe place for people to express their doubts and get answers. However, there is no safe place if human beings are responsible for determining which parts of the Bib le are true and which parts are not genuine. Be thankful to God, he far beyond what our little heart understands, reliable, definitely gave us his word. Without understanding the power of God, we all need humble mind. My idea is neither your thought nor your way. Because the sky is higher than the earth, my path is higher than your way, and my idea is more than yours High book 5: 8-9, NKJV)

Self-assessment process Essay Example | Topics and Well Written Essays - 2500 words

Self-assessment process - Essay Example Through such a process, I will be in a better position to make a successful career decision. A self assessment process is imperative in understanding my personal inclination towards career and is of considerable importance in making a career choice (Foster 21). Under normal circumstances, the process regards obtaining an understanding of myself in a manner that predisposes me to establishing a credible career choice that reflects my natural abilities. Therefore, before I decide on the job to select, it will be necessary to engage in the self-assessment course that will furnish me with the required knowledge of the career options that suit my natural frame. Areas to be evaluated include personality that represents my emotional and behavioral features, my attitudes towards life that implies how I perceive life’s events, my leadership qualities denoting my ability to exercise the function of authority, team work that regards my ability to work with groups or teams as well as inno vation, which primarily concerns my capacity to develop novel and creative ideas. All these parameters will be part of my comprehensive self-assessment process that will illuminate my impending career choice. ... and throughout my academic process I have learnt the basics of working in a business environment through the ethos of leadership and management gained through the process. As a result, I am well-trained and professionally equipped to tackle the career environment. I am a committed team worker with immense interest in interpersonal communication and interaction, very friendly with people and also a firm believer in collaboration. My personality leans towards aggressive, ambitious and charismatic tendencies because I tend to be more proactive in my approach to issues. Therefore, I have the ability to work effectively with groups because of my personal inclination to socializing, problem solving and collaboration. Owing to my towering personality type, I am an effective leader with credible leadership qualities ranging from decision making, consultation, collaboration, communication, team work and interpersonal skills. My experience in college leadership roles has exposed me to numerous challenges of a leader thus sharpening my already existing leadership profile. Similarly, with regard to experience, I have held several leadership positions throughout my education particularly in college. I am a creative individual who likes experimenting new deals in daily practice. One of my hobbies is trying new things, and my joy lies in the successful implementation of a new idea. I have always liked trying something new ideas (whether it is my own creation or somebody else) although I am acutely imaginative and innovative at a personal level. My greatest motivation for innovation is my firm belief in change, which to me represents an opportunity to do something better and accomplish a goal. I spend a lot of time imagining and developing new frontiers of thought, management and

Safety Tents and Other Non Permanant Buildings Essay

Safety Tents and Other Non Permanant Buildings - Essay Example These shelters take numerous forms, including a traditional tentlike structure. One of the main advantages of these protective structures is that they are incredibly strong in relation to the weight of their components. Therefore, they can be rapidly deployed by two to four people. Kevlar’s superiority stems from its minimal â€Å"vibration transfer† (Kayak Terapad). It can be molded and shaped, yet maintains its structural integrity. Therefore, it enhances the user’s safety in numerous stress and impact scenarios. One of the military uses for such shelters is the Chemical Biological Protected Shelter System (CBPSS) (Business Wire 1997). They are intended for battlefield use against biological or chemical weapons assault. A company called Chemfab has developed the Kevlar-based fabric. The shelter also reduces lingering air contamination following a chemical or ballistic explosion. Homeland Security is using such a device in dirty bomb control. This variation is called a Universal Containment System, and it was developed by Vanguard Response Sytems in Canada (Popular Mechanics 2004). The ballistic resistant tent contains a foam that suppresses the detonation blast. At present, the system can only suppress a bomb the size of a book bag. The technology will be developed to contain a truck bomb, like the one deployed at the World Trade Center in 1993. A similar application is called the Chemical Biological Explosives Containment System (CBECS). It consists of a seven foot inflatable tent that contains a water-based foam, which not only contains the explosion, but it also puts out any chemically-based fires that may ignite (Patent Storm 2007). The whole structure can cover an explosive device, which is then deployed relatively safely (DOD Tech Match). These tents are now being made for the general public by Zumro, Inc. The Chemical/Biological Counterterrorism

Performance of the UK auto- and motor industry Literature review

Performance of the UK auto- and motor industry - Literature review Example Because of this superior level of internet sponsored network connectivity, the world has become a highly connected one single global entity. It is highly interesting to mention that the level of dependency that exists in between the organizations and business forums of various countries and markets is widely varying and largely diversifying in nature. As of the recent times, the advanced markets located in the well developed economies are facing factors of low demand because of the influence of a wide range of macroeconomic factors like the slow growth in the economy and fall in purchasing power of the consumers. It has become a common and normal trends for the companies and organizations located in the regions of slower growth to look forward to the markets of emerging economies like Africa, china, Russia, Brazil and India so as to secure their growth lines of the future (IMF Research Dept, 2012, p. 7) . The UK motor segment forms a very crucial and critical part of the entire motor industry of the European region. The factors like product manufacturing, combined participation and sharing of manufacturing policy by the auto manufacturers as well as the multiple markets served in a combined basis by the entire European automobile sector makes the contribution of the UK motor industry very important. It also has to be taken into account that the production of the automobile sectors in the UK region contributes in a positive manner in the economy and society of the nation (Johnson, 2002, p. 164). UK auto industry: sector overview It is highly relevant to mention that the most of the nations of the European region is facing extended periods of macro level economic challenges in regards to the troubles of the Euro zone. Since the UK motor industry shares a high degree of contribution based dependence with the entire European motor industry, it is very natural that the potential influence of the regions’ macroeconomic challenges is bound to cast a shadow on t he prospects of the UK automobile sector. As of October 2012, various reports on the automobile sector of the UK region hinted to the fact that around 1400 workers of the motor sector is about to lose their jobs as a result of cuts that are supposed to be initiated by the motor manufacturing giant Ford in its plant locations of Southampton and Dagenham. Further insights revealed that the job cuts in the motor sector is an outcome of Euro zone powered effect which comprised of uncertainty in the business environment as well as erosion in demand. It was also realized that Ford has focused on consolidating its manufacturing operations in the European region on the strategic grounds, while trying their best to absorb the case of depreciating demand of finished products from the European region. Talking on the lines of impacts and threats faced by the automobile sector of UK, it has to be said that the automobile sector faces serious issues on the lines of rising cost of manufacturing in the UK region as well as highly

Assess the hierarchical structure of the court system in England and Essay - 5

Assess the hierarchical structure of the court system in England and Wales. To what extent does the common law doctrine of binding precedent engage with this structure - Essay Example Chadwick (2011) asserts that English legal system is found in common law that among other factors advocates for an organised court system. Courts in England and Wales observe a rigid hierarchy as a consequence of hierarchy of judicial precedents. An important function of the English courts is operating two distinct systems of justice namely the criminal and the civil justice system (Chadwick, 2011). There exists a fundamental distinction between the two systems of justice. The criminal justice system concerns with enforcing criminal law in criminal courts employing its unique criminal procedures. Criminal law is known as the law of the state and falls under public law. Criminal law is meant to protect the public by prohibiting specific forms of conduct and punishing the offenders (Chadwick, 2011). Cases that have a criminal element are heard first in the crown court or the magistrates’ court. The civil justice system is designed to handle matters that are civil in nature in ci vil courts. Civil law is the law among individuals that are essentially private law. Civil cases are principally tackled in the high court and county courts. The size and complexity of a particular matter determine where the matter will be heard. Gillespie (2013) observes that courts in England and Wales adhere to a specific hierarchical order. On the top most of the hierarchy is the supreme court of the United Kingdom. This is a modern supreme court established by constitution reform act of 2005, and it replaced the House of Lords. It is constituted by 12 professional judges appointed by members of the House of Lords (Gillespie, 2013). The court is the highest appellant court and court of the last resort in all matters under the English law, Wales’s law as well as Northern Irish law. The court bears authority over criminal cases in Scotland. In addition, the court has jurisdiction over appeals from the

Critically discuss and analyse 2012 London Olympic play in their Essay

Critically discuss and analyse 2012 London Olympic play in their capacity to generate social, cultural, economic and tourism impacts - Essay Example Hosting the Olympic Games has also been something that many countries want to be associated with especially when it comes to hosting (Tcha 2004, p. 312). The history of the Olympics back to Athenian period, where they are thought to have originated from (Veraros, Kasimati & Dawson 2004, p. 749-50). Since then, the competitions have developed and increased in the number of sporting events and the manner in which the competitions are organized. The Olympic Games are usually held after every four years, compared to other sporting events that in most cases take place on a biennial basis. Organization of the Olympic Games is a mandate of the International Olympic Committee (IOC), a body that was initiated in 1894 with current headquarters in Britain. Currently, many countries across the world dream of hosting the Olympic games after the time required, there is always a lot of bidding for hosting rights of the sporting event. The motivation to host these events is usually preceded by the thought of perceived benefits that the events pose to the state (Caporale, Economou & Philippas, 2008, p. 10; Berman, Brooks & Davidson 2000, p. 785). Previously, statistics and records compiled at the end of the Olympic Games show that in spite of the huge costs incurred in preparations for hosting of the events, there are huge benefits derived from successful Olympic Games. The 2012 Summer Olympics were also commonly referred to as the 2012, and were a major international multi-sport event that were held and celebrated in the tradition of the Olympic games. These events took place in the London capital in the United Kingdom in the 2012 and attracted more than 200 nations with over 10, 000 athletes taking part in the different athletics categories. Following a successful bid, London was able to outwit other fierce rivals in the hosting process that included Russia’s Moscow, the New York City of United

The Impact of the Two World of Black America Essay

The Impact of the Two World of Black America - Essay Example The First World War did not reduce but, on the contrary, increased racial opposition between white and African-American citizens. Racial tensions were accompanied by serious economic and social controversies. At the beginning of the Second World War, military institutions and forces in America continued to reflect racial tendencies in society, refusing to willingly accept Black soldiers. Despite those controversies, WWII became the turning point in the development of new racial relations in America. Changes in military structures, the rise in racial awareness, and wartime intercultural education shaped the ground for restructuring the entire system of racial relations in contemporary American state. WWI and racism in America World War I was the time when the lives of African-Americans became virtually unbearable. That was also when racism and racial antagonism became serious barriers to effective military action in America. â€Å"World War I brought the American South to the brink o f momentous change, with the sense of energy and opportunity that accompanied mobilization on the home front† (Hudson 2009, p.3). ... Failure to engage Black citizens in military service distorted the picture of citizenship in America and reduced its chances to ensure loyal service (Lentz-Smith 2009). White supremacy before and during WWI were both tragic and inevitable. Blacks had little opportunity to change their situation to the better. It would be fair to say that WWI did not change the place and position of Blacks in America; moreover, it deepened the conflicts between Blacks and Whites, leading to the subsequent reaffirmation of white supremacy at all levels of the country’s social hierarchy. Davis (2008) tells the story of an African American soldier getting back home after the end of WWI. An exception rather than the rule, Blacks’ involvement in military actions was a continued source of controversy. More serious were the consequences of Blacks’ participation in the military: upon his return to Blakely, Georgia, the young soldier was met by a group of white men and forced to put off hi s uniform (Davis 2008). He was also threatened not to wear the uniform in public (Davis 2008). However, the young man ignored the threat and, for this reason, was lynched by a mob (Davis 2008). Lynching had to send an explicit message to all African American soldiers throughout the state: that they sacrificed their lives and health to protect the liberty of their people would not lead to racial equality (Sollors 1996). The lynched soldier became the hero of African American literature during the 1930s, but even the popularization of the soldier’s image could not change the situation. WWI further intensified the conflicts between African-Americans and the white majority. Lynching was just one example of open racial discrimination in America

The Recruitment Method and Selection Procedures Applied at the Research Paper

The Recruitment Method and Selection Procedures Applied at the McDonalds Corporation - Research Paper Example This paper seeks to assess the effectiveness and appropriateness of the recruitment method and selection procedures applied at the McDonald's corporation. It will also address the use of the internet as a recruitment tool at McDonald's. it is expected that proper recommendations for improvement will be presented after an evaluation of the strengths and weaknesses of the recruitment policies and procedures applied at McDonald's. McDonald's opened its door to the UK public in 1974 and as of the end of 2004, there were over 1330 McDonald's UK restaurants, with 60 % being company owned, employing 43, 491 individuals and the rest being franchises, employing 25, 000 individuals. For each McDonald's restaurant, its management is responsible for maintaining its own independent operations, accounting, inventory control, training and Human Resource functions. There are two groups of employees; the hourly-paid, also known as the crew members, and are charged with the task of carrying tasks that ensure a restaurant runs efficiently. The other groups are the salaried managers who manage operations and oversee the business and crew members' performance. McDonald's established that for the organization to register improved organizational outcomes, it is imperative that effective recruitment and selection practices are applied.   McDonald's prides itself in being an equal opportunity employer that does not discriminate along gender, nationality, race, colour, marital status, age, religion, political affiliation or any other unjustified reason. In 1992, McDonald's put in place the Equal Opportunities Group that was aimed at encouraging a workplace that was characterized by equality and diversity.