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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Morragh Mine 1. Identify the hazards in the case‚ which can be environmental‚ situational‚ human or ergonomic. Environmental Hazards Mining is a dangerous occupation‚ and many of these dangers are associated with the environment in which the miners worked. One environmental hazard evident in this case was the dangers the miners encountered while working underground. While working in this type of situation there are always threats of cave-ins and because the environment is underground there would
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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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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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Received through the CRS Web The Enron Collapse: An Overview of Financial Issues Mark Jickling‚ Coordinator Specialist in Public Finance Government and Finance Division Summary Only months before Enron Corp.’s bankruptcy filing in December 2001‚ the firm was widely regarded as one of the most innovative‚ fastest growing‚ and best managed businesses in the United States. With the swift collapse‚ shareholders‚ including thousands of Enron workers who held company stock in their 401(k) retirement
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"The Silver Mine" the story is about this group of people who find a mountain that has silver in it. They end up taking some of the silver to a mineralogist to see the value of the mineral and they find out that it is silver. Later some of the men end up dying because all the money is corrupting them. "The Silver Mine" is by‚ Selma Lagerlof who has won the Nobel Prize as the first women ever to receive the prize. An abundance of money that you have not earned can corrupt you. First of all this
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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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Is America headed for an economic collapse? By: John Shepherd America’s collapse Is America headed for an economic collapse? Research indicates the possibility of an economic collapse because of the exorbitant national debt‚ loss of jobs‚ and the falling stock market. History can tell a story that many people overlook. People tend to repeat their mistakes and if we take a look at what is in the past we can predict what the future may hold. In the 1930’s the United States faced an economic
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