A Sequence of Chemical Reactions: Transforming Copper Briefly describe. a) Why must you carry out the oxidation of Cu with HNO3 in a fume hood? Concentrated nitric acid is a toxic oxidant. Avoiding skin contact or inhalation is highly important. The reaction between Cu and HNO3 produces NO2‚ a toxic brown gas; therefore working under the fume is necessary in order to prevent inhaling the toxic gas. b) Why you should be particularly careful when you work with 3 M H2SO4 solution? Sulfuric acid
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Copper is an element that occurs in minor amounts in the earth’s crust. Estimates of average crustal prevalence are on the order of 0.0058 percent by weight. Deposits considered to be economically recoverable at current market prices may contain as little as 0.5 percent of copper or less‚ depending on the mining method‚ total reserves‚ and the geologic setting of the deposit. Here is the flow sheet on how to process copper from Zenith. Copper Process Flow Sheet: Copper ore is first quarried from
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heat CuO + H2O 4) CuO + H2SO4 Cu2+(aq) + SO42-(aq) + H2O 5) Cu2+(aq) + Zn Cu + Zn2+(aq) Stage 1- Dissolution of Copper Mass of vial & copper = 3.537g Mass of vial = 2.505g Mass of Copper = 1.032g Moles of copper = mass (g) ÷ (63.5g/mol) = 0.0162 mol (3s.f) Copper description: Initially‚ the copper was a solid that was cut into thin strips. It had a shiny/metallic and opaque look‚ with an orange colour. HNO3 description: The nitric
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If I was a Kitchen Oven If I had to be a kitchen utensil or appliance I would be an oven‚ because it have different types of things it’s used for on an everyday bases. Also it can be electric or gas. Ovens even comes in different colors shapes and sizes. You can use it every day if you had to. Almost anyone can use an oven. Sometimes people don’t realize how easy it is to use an oven. When it comes time to use one‚ some people
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6: The Copper Cycle CHEM 101 Lab-M/630 As an investigation of the copper cycle lab group 6 conducted an experiment on 6 October 2014 at Arizona State University laboratory that would demonstrate the cycle of reactions that copper (Cu) can produce when introduced to with other substances/reactant. The purpose of the investigation was to notice the transformation of a specific quantity of copper wire (g) as it undergoes its coordination reactions until a reduction method would yield copper (Cu) again
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Jordyn Steed 337131 English 101 March 17‚ 2011 “A Woman’s Worth” Perhaps women have no sense of their own worth. Obviously we (me being a woman) reflect too much of self-esteem off of the desires of the average male. Using both passages “Only Two Percent of Women Describe themselves as Beautiful” by Dove‚ StrategyOne‚ Nancy Etcoff‚ and Susie Orbach and “Decoding Victoria’s Secret: The Marketing of Sexual Beauty and Ambivalence” by Marie D. Smith to bring women’s issues with themselves to
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In this lab‚ we changed copper into various forms using different chemicals and chemical reactions. The purpose of this lab is to demonstrate that the product of a chemical reaction depends on what is present at the time of that reaction. This lab also displays how matter cannot be created nor destroyed in a chemical reaction. In a lab‚ you must always make safety a priority in case of an emergency. In our lab‚ we made sure to wear closed-toed shoes as well as goggles at all times. We also performed
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English for academic purposes AAC 260 Homework Assignment I Francis Bacon By: Wesley Strik Of Studies by Francis Bacon‚ About the value of knowledge. 1) “Studies serve for delight‚ for ornament and for ability.” Their main use lies in the fact that we can use them for seclusion and relaxation. We can use them in conversations and as a means of embellishing one’s language. We can use studies to make the unable more able‚ grant wit to those in need of it and to cure any other deficits
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To What Extent And In What Ways Did Women Participate In The Renaissance? Thesis: Women of a higher social and economic status had a broader range of opportunities such as reading‚ writing‚ and art‚ but were still expected to do household chores‚ while women of a lower class were bound even more strictly to their domestic responsibilities. General Info • Household chores came first (Cooking‚ cleaning‚ sewing‚ etc.) • If a woman did not marry‚ she would enter a convent or live with relatives
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There are many jokes about men saying women do not belong in the kitchen‚ which is in fact strange because most men are unable to even fix themselves a sandwich. Men assume that whatever a woman can do a man can do it better. Which maybe true but now days it is not because women are now working harder than men. In the passage Turkeys in the Kitchen‚ Dave Barry writes this passage to inform and entertain us on a very delicate subject of gender roles and gender inequality. Barry uses a tone throughout
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