Three things are usually required for a chemical explosion: a chemical reaction that occurs very rapidly‚ a large increase in gas pressure‚ and a confined-reaction vessel in which the pressure of the gaseous products can increase to a point that the gases break violently out of the container. In this chemistry and physics science fair project‚ you will use the combustion of ethanol to provide energy for a small explosion. The chemical equation that describes the combustion of ethanol is shown below
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CHEMICAL MEDIATORS OF INFLAMMATION Cell derived mediators Mediator | Source | Function | Vasoactive amines | Histamine | Mast cells‚ basophil‚ platelet | Vasodilation‚ ↑ vascular permeability‚ endothelial activation | Serotonin | platelets | Vasodilation‚ ↑ vascular permeability | Eicosanoids | Prostaglandins | Mast cells‚ leukocytes | Vasodilation (PGD2‚PGE1‚E2 & PGF2-α)‚ pain (PGE2)‚ fever | Thromboxane A2 | | Promotes platelet aggregation‚ vasoconstriction | Prostacyclin
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BEd132: Positive Child Guidance 20120883 Juhi Mehta Each child is special‚ unique and important. Hence‚ it is essential to acknowledge their feelings and‚ as adults‚ respect their needs and abilities at all times. “Children’s behaviour is compelled by a range of physical‚ biological‚ social‚ emotional as well as environmental factors” (New Zealand Tertiary College [NZTC]‚ 2012). Teachers‚ parents and families play a vital role in sharing the responsibility to usher‚ channelize and work towards
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also cause a concern when it comes to consumers. Those hard-to-pronounce chemicals that are in the list of ingredients on the label are used for more than just flavoring‚ appearance‚ and preserving the food (Food Additives). Those additives are used in some other very harsh items such as bug repellent (Food Additives). However‚ there are some simple and sustainable options that can help consumers avoid running into harsh chemicals and additives that may be lurking in their food. These changes will not
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Student 11/6/12 Branch Essay Chemical Corps Chemical Corps There are many different types of branches in the United States Army. All of them serve important needs to protect the nation’s freedom. The branch that has to do with defending the nation against the threat of chemical‚ biological‚ radiological‚ and nuclear weapons and lies within the Chemical Corps of the United States. This is important because rise of weapons of mass destruction has skyrocketed in the past 15
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Table of Contents Introduction…………………………………………………………..1 Financial Analysis…………………………….…..………………….1 Strategy Diamond Model……………………………………………7 Internal Analysis…………………………….……………………….8 Value Chain Analysis…………………………………………….……..8 VRINE Analysis…………………………………………….…………12 External Analysis……………………………………………………13 Porter’s five forces………………………………………………………13 PESTEL……………………………………………………………..…..14 Alternative Evaluations………………………………………….…15 Fit analysis…………………………………………………….…….18 Conclusion………………………………………………
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Chemical Engineer The chemical engineer is an invaluable link between scientific principles and manufacturing realities. It involves the use of chemical‚ physical‚ and engineering principles. The scientist in a laboratory does basic research to develop new compounds and processes. When the scientist discovers a product that may be useful‚ the chemical engineer takes over. They adapt the product for big scale manufacturing. They do this by designing a plant to produce the item on large scale
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Chemical Bonds Chemical Bond: is the force that holds atoms together in a compound. They form because they lower the potential energy of the charged particles that compose atoms. Chemical bonds can be broadly classified into two types: Ionic and Covalent. Ionic: metal & nonmetal Metals have a tendency to lose electrons and nonmetals have a tendency to gain them. The metal atom becomes a cation and a nonmetal becomes an anion. The oppositely charged ions attract one another and form an ionic
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Chemical Weapons Chemical weapons use the toxic properties of chemical substances rather than their explosive properties to produce physical or physiological effects on an enemy. Although instances of what might be styled as chemical weapons date to antiquity‚ much of the lore of chemical weapons as viewed today has its origins in World War I. During that conflict "gas" (actually an aerosol or vapor) was used effectively on numerous occasions by both sides to alter the outcome of battles. A significant
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Singapore’s iN2015 strategy has also been outlined to grow the info-communication sector so as to build a well connected society in Singapore with the global communication; that can potentially encourage growth in the mobile broadband services (IDA‚ 2005). b. Economic Singapore had managed to overcome financial crisis in 1997 and 2008 while many neighbouring economies withered during the period. As one of the world’s fastest growing economies in 2010‚ Singapore is still focusing on the trades and businesses
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