Week 10: Oxidation and Reduction Reactions: The Reactions of Copper Data: Part I: Preparing a solution of copper (II) nitrate Initial mass of copper wire: .520g Mass of copper wire after vigorously scouring: .518g Observations of Copper (II) ribbon mixed with HNO3: Solution turned green. Thick brown gas formed. Copper (II) bubbled vigorously. Cu (II) dissolved‚ solution appeared green/blue. After the addition of H2O a blue crusty precipitate formed. Part II: Synthesis of solid copper
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Restoring Balance LeChâtelier’s Principle and Equilibrium Introduction Chemical equilibrium is a true balancing act. What happens when the balance is disturbed? The purpose of this lab is to observe the effects of concentration and temperature on equilibrium and to visualize how balance can be restored based on LeChâtelier’s Principle. Background Not all chemical reactions proceed to completion‚ that is‚ to give 100% yield of products. In fact‚ most chemical reactions are reversible. In the forward
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Endothermic Reactions of Cold Packs An instant cold pack is a device that is made up of two bags; one containing water‚ and an inside bag containing ammonium nitrate. Have you ever wondered how people use hot packs to warm up their hands in the winter or use cold packs on a real terrible injury? How can this package produce heat or cold by only shaking or crushing those packs? Ammonium nitrate is a chemical compound that is a white crystalline solid used as fertilizer and as a part of explosives
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Research as step-by-step process obeys systematic procedure that helps out to create the paper and radiates meaningful essence. Writing a research paper frequently requires continuous‚ and sometimes extensive‚ re-evaluation and revision of both one ’s topic and the way it is presented. The research process involves identifying‚ locating‚ assessing‚ analyzing‚ and then developing and expressing your ideas. These research processes are cited by Bailey (2006); 1. Select a general topic that interests
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ESF #13 Origin of ESF-13 The NRF provides for 15 “emergency support functions” (ESFs)‚ including Emergency Support Function-13 (ESF-13)‚ which covers public safety and security. The ESF-13 from FEMA details support services related to Public Safety and Security. The primary agency in control of ESF #13 is the Department of Justice/Bureau of Alcohol‚ Tobacco‚ Firearms‚ and Explosives. The ATF’s efforts are to support the full range of incident management activities by coordinating and integrating
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"And then‚ do you know‚ Monsieur Marius‚ I believe I was a little in love with you." (Hugo‚ et al. 244). Victor Hugo’s‚ Les Miserables‚ is not just another story to tell and catch the reader’s attention‚ it is so much more. It portrays many people’s lives during the 1800’s and the attempt to change their lives for the better. One of them is a young woman named Eponine and her family. In pursue to find love and purpose‚ Eponine showed to be the most sacrificial and resilient woman in this novel
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Nguyễn Hữu Hoàng Hải-EBBA4A the Scarcity Principle of Robert Cialdini Robert Cialdini‚ one of the foremost experts on influence‚ found that people value and desire something more when it is rare or difficult to obtain. He called this the Scarcity Principle). Across numerous experiments‚ Cialdini and others have found that making something rare ("only 5 left")‚ time limited ("one day sale")‚ or unique ("just for you")‚ increases its perceived attractiveness and value. Scarcity surely works in
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Les Brown-You Deserve I’m going to start off by saying I’m a huge fan of Mr Brown. I believe he is a great motivator with a dynamic personality. Years ago‚ Mr Brown was the keynote speaker at one of my family reunions. His speech‚ although tailored to family‚ was mainly about the power we have as individuals to achieve personal greatness. I’m not the only one who left that reunion feeling better about myself and my family as awhole. When we watched the speech in class‚ I was pleasantly surprised
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literary history‚ there are thousands of examples of authority in plays‚ poetry and emblems and‚ in many cases‚ these authorities are inextricably linked. Hierarchical authority is not laid out in black and white; it is a complex power. In Corneille’s Le Cid‚ the audience is introduced to the power of hierarchical authority before even beginning to read
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Redox Reactions Reactions involving oxidation and reduction processes are very important in our everyday world. They make batteries work and cause metals to corrode (or help to prevent their corrosion). They enable us to obtain heat by burning fuels--in factories and in our bodies. Many redox reactions are complex. However‚ combustion and synthesis (from elements) are two ordinary examples which require very little description. Just a little more involved are the displacement reactions‚ with
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