mass of copper wire was 1.250g but the recovered copper was only 0.120 subtracting the mass of the recovered copper with beaker from the tare beaker mass. So the percentage yield resulted only to 9.6% it is very little‚ and it may be due to many possible sources from doing the steps. Adding too much or too little of a compound to the copper solution‚or the loss of copper during transport or by being left on the stirring rod. Another situation which was a source of error is when the copper solution
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Decomposing Copper Carbonate Mass of Crucible (g) Mass of CuCo3 added (g) Mass of Crucible + Copper Oxide (g) Mass of CuO produced (g) 0.00 0.25 0.50 0.75 1.00 1.25 What happens to the mass of the copper carbonate when it is heated? Give a conclusion‚ which describes why the mass of copper carbonate may have changed during your experiment. When the copper carbonate is heated it decomposes forming copper oxide and carbon dioxide. The copper carbonate turns into a
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workers are trapped at the Chilean copper mine 300 meters below the ground level. Safety codes require ladders for mines‚ and the miners attempted escape through the ventilation shaft system‚ but the ladders were missing. The mining operation soon became known as “Camp Hope‚” for the next 69 days the dry‚ dusty‚ work site would be where rescue workers‚ officials‚ authorities‚ media‚ friends‚ and family of the trapped miners would call home. A small copper operation in northern Chile‚ owned by
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When you mix copper‚ silver‚ and nitrate together‚ you will end up with silver nitrate solution will turn blue (it has become copper nitrate). On the piece of copper‚ there would be a coating of solid silver. If a chemical reaction is going to be observed when chemicals are mixed‚ heated or any other means of altering the substance‚ then we will be able to predict the products formed. If it is observed that in the original versus the changed substance no new substances are formed‚ the change is reversible
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KENNECOTT COPPER CORPORATION CASE REPORT 1. Analyze the economic rationale of the Carborundum acquisition. Under what conditions an acquisition would be expected to add to shareholder value in general? Do any of these reasons apply to Carborundum acquisition? Prior to the consideration of Carborundum as an acquisition target‚ Kennecott‚ a copper company‚ pursued an acquisition of Peabody‚ a coal company‚ for $285 million in cash in 1968. There are two main rationales behind the acquisition of
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Daniel Osherow ENGR 1301 5 December 2012 Copper Wire Sizes (EE) The diameter of a copper wire is measured by using a system called the American Wire Gauge also known as AWG. This system has predominantly been used in the United States and Canada since 1857. Using this measurement the cross-sectional area of a gauge is able to be found. We then use this area to determine the wires current carrying capacity. The gauge numbers for wire and diameter values work inversely‚ as when one increases the
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Problem Does temperature affect the resistivity of different sized copper wires? Hypothesis I think that the resistivity will increase with higher temperatures because with higher temperature‚ resistivity is higher due to the fact the atomic lattice structure increases. Background Electrical resistivity is the measurement of how a material opposes the flow of an electrical current. On the other hand‚ electrical conductivity () is the inverse of resistivity. It is the measurement
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Ubee™ DOCSIS 3.0 Cable Modem Model: U10C035 U10C035 Device Highlights Performance — Enabled by DOCSIS 3.0‚ the U10C035 delivers the bandwidth to support subscribers’ multimedia and high-bandwidth applications (up to 171Mbps downstream‚ 122Mbps upstream).* Deployment — The U10C035 is well suited for large subscriber deployment‚ providing simplified installation‚ operations‚ diagnostics‚ and supportability. Network Interface — 10/100/1000 Ethernet interface provide exceptional performance. IPv4
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examine the extent to which the temperature and presence of common ions affect the amount of copper sulphate salt that can dissolve in 100 grams of water until it reaches saturation. In order to achieve the aims of this experiment‚ a methodical approach is taken to measure solubility of the salt at three different temperatures and then construct a solubility curve for copper sulphate. Additionally‚ copper sulphate is reacted with sodium hydroxide to investigate further the effect of common ions on
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of the news of savages causing trouble everywhere Jamie received a copper flute as a gift from overseas Jamie sees a spiral of smoke coming from the hills Jamie finds his pet seal shot Chapter 4 Jamie clamours over rocks to find Robert because he was out with Andrew hunting Jamie sees a snow goose and follows it into the woods Jamie meets a native boy by a creek Jamie gives the boy his copper flute; the boy gives Jamie his copper necklace and a salmon Chapter 5 Jamie returns to town and finds everyone
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