University Hospital Memo To: Pat Rowe‚ Vice President From: Yilin Zhang CC: Jon M. Werner Date: 5-Nov-13 Re: Technology Training Recommendations With the development of medical science and medical technology‚ high-tech medical devices‚ which come out constantly‚ help caregivers stay informed about new equipment and principles of work performance‚ safe use of new equipment‚ and other issues that are increasingly prominent. Meanwhile‚ the poor attitude of staff during training is also a big
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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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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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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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1990‚ all the new workers are woman. However‚ The biggest issue for the woman is maternity and how to take care of their children during their work’s hours. The idea of providing daycare for the children of working mothers wasn’t a bad idea back to 1988‚there was a great deal of employee’s children who had enrolled in the Nyloncraft Learning Center. On site learning center had a big impact by reduced turnover‚ absenteeism‚ and tardiness. It was good for business‚ employees‚ and the kids. We wasn’t
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The Effect of pH Level of a Liquid on the Rate of Corrosion of Copper wire In this experiment‚ I will be testing the corrosion rate of copper wire after leaving them in different liquids with different pH levels. By doing so I will be able to determine which pH level corrodes copper the fastest. I will conduct this experiment by pouring 250mL of different liquids with different pH levels in cups‚ followed by an iron strip placed into the cup. A stopwatch will be timing how long it takes the iron
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Chilean Folk Music There are four main types of folk music in Chile they are: -Northern Chile‚ Musica Andina -Central Chile -Mapuche Music -Chiole Music Each type or sub-genre of music has a quite distinct sound and can be related to the racial groups of these areas and to the history of Chile. Racial History of Chile The history of Chile is varied as it has influenced greatly the course of folk music in these four main areas. The history is marked by the following major events:
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Memo To: Ms. Ramos From: DOraimi Subject: 2012 Income Correction Date: 01/20/2014 You believe that the $1 million overstatement of the 2011 ending inventory has no impact on 2012’s reported income‚ because 2012 ending inventory is correct. In this memo‚ I will explain how the overstatement in 2011 ending inventory affects 2012’s reported income. Based on the formula “Cost of good sold= Beginning inventory + Inventory purchased – Ending inventory”‚ the cost of good sold during
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THE COLLAPSE OF ENRON August 11 2008 [Type the abstract of the document here. The abstract is typically a short summary of the contents of the document. Type the abstract of the document here. The abstract is typically a short summary of the contents of the document.] FROM PERSPECTIVE OF CORPORATE GOVERNANCE TABLE OF CONTENTS CONTENTS PAGE NO. Introduction 3 Background of Enron 3 Enron Business Model 4 Summary of transactions & Partnerships
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