3rd‚ 2009 Lab Report #3: Copper Cycle Abstract: The purpose of the experiment is to cycle solid copper through a series of five reactions. At different stages of the cycle‚ copper was present in different forms. First reaction involves reaction between the copper and nitric acid‚ and copper changed from elemental state to an aqueous. The second reaction converted the aqueous Cu2+ into the solid copper (2) hydroxide. In the third reaction Cu(OH)2 decomposed into copper 2 oxide and water when heated
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In 1947‚ One hundred eleven men were killed in an explosion that took place at the Centralia No 5 mines located in the state of Illinois. The explosion was caused by highly explosive coal dust that was ignited by an explosive charge. During that time‚ Driscoll Scanlan was one of l6 Illinois state mine inspectors‚ appointed by Governor Green. He was given the responsibility of policing the mines as well as the operators. Additionally‚ it was his duty to make sure that the company’s was in compliance
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Heat Exchanger Rupture and Ammonia Release The CSB Case Study on the incident‚ examines the events leading up to the rupture of the heat exchanger and the ammonia release‚ and the corresponding emergency response to the event. It is clear that there were many failures and opportunities to correct and prevent this incident from occurring. As they performed their investigation‚ they were able to identify several direct‚ contributing‚ and root causes‚ although they don’t specifically designate
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lives. Mine disasters once were really common. In the single year of 1907 there were 18 coal mine disasters.. Among the disasters in 1907 was history’s worst the Monongah coal mine explosion‚ which claimed 362 lives and impelled Congress to create the Bureau of Mines. I will discuss this disaster more later in this paper. Mine accidents have declined dramatically in number and severity through years of research‚ technology‚ and preventive programs. Today mine accidents resulting
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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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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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been linked to discomfort in muscles following bouts of athletic performance. Myofascial release is often used as an aid to help alleviate this discomfort. This‚ however‚ is often utilized only as a post-exercise treatment and limited research has been done for its pre-exercise benefits. Of the literature available‚ there is a strong disconnect to the observed benefits for pre-exercise myofascial release‚ especially from foam rolling. The purpose of this study is to reconcile the conflicting
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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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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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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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