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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Coursework 4 Copper Name of student: Alfiya Ospanova Tutorial group: G Copper is one of the earliest elements explored by humanity. Due to the special red shade it was easy to find in ancient times. The metal was named according to place where it was found‚ the Cyprus islands. Copper produced in massive stars and spread in the world as minerals like chalcocite and chalcopyrite (sulfide of copper)‚ azurite and malachite (carbonate of copper)‚ cuprite (oxide of copper). The atomic
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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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Research question/Aim Extract copper from copper oxide by reduction using butane gas Hypothesis The butane gas will reduce the copper oxide and leave behind pure copper. This will allow us to find the empirical formula of the copper oxide as well as the masses of oxygen and copper Variables Dependant variable The dependant variable will be the reduction of the copper oxide which will be calculated at different temperatures. Independent variable The independent variable here
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Ethics Paper As we have discussed the ethical issued related to production and distribution of wine‚ we will now focus on the ethical issues relating to the consumption of wine. The consumption of wine in U.S. has been on the rise since last fifteen years. The U.S. ranks 34th in wine consuming nations with wine consumption of 7.69 liters per capita per annum. The consumption of wine in 1994 was 404 million gallons which increased to 658 million gallons in the year 2008. These figures show the
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Percent Copper and Formula of a Copper Compound Sofia Economides Date Preformed: 3/19/2012 Date Submitted: 3/26/2012 Lab Partners: Anita Smith‚ Taylor Bell‚ Derek Bourgeois 1. Purpose a. To determine the percent of copper and the formula weight of a copper compound. 2. Introduction a. Magnesium is a very active metal which can reduce copper (II) ions in a weight sample of a compound to metallic copper. The reduction of copper ions in a compound to a copper metal
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Crushendae Campbell Understanding business ethics Definition: Primark CSR policy employees have equal opportunities based on merit: suppliers are treated fairly local communities are respected and supported by Primark the company takes its environmental responsibilities seriously CSR - CSR is a process with the aim to embrace responsibility for the company’s actions and encourage a positive impact through its activities on the environment‚ consumers‚ employees‚ communities‚ stakeholders
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Business Research Ethics Chris Swartz RES/351 Kim Gravelle October 27‚ 2014 One research project that I am familiar with is one that had happened at my place of employment. This project was about adding sewer lines to the township where I work. The township supervisors had contacted several companies to do the work‚ and also several different agencies to make sure that the work that was being done was being done correctly. The issue that came to light was the repayment for the work that
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IKEA in Russia - Ethical Dilemmas Lusine Demirjian Business Ehics I-Executive Summary IKEA is the world’s largest retailer of home furnishings. It strives to provide simple‚ functional‚ modern‚ and useful products at affordable prices to as many people as possible in as many places regardless of their geographical location. IKEA concept is implemented from the start of idea‚ implemented into the design‚ manufacture‚ logistics‚ sales and final assembly of each product. IKEA was developed by
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TUI UNIVERSITY Module 2: Case Study‚ Should disabled veterans get preferential treatment over better qualified candidates who are not disabled veterans? Course Number: Ethics 301 Normally‚ when I have written papers in the past I have read the question asked of the professor and roll around the question in my head. I usually respond to the question with a “short answer”‚ which would be “no” or “long answer” which is “yes”‚ and then research the question
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