semi-conducting ferromagnetic alloys lead to different properties‚ as first predicted by White‚ Hogan‚ Suhl‚ Tian Abrie and Nakamura. Some alloys are made by melting and mixing two or more metals. Bronze‚ an alloy of copper and tin‚ was the first alloy discovered‚ during the prehistoric period now known as the bronze age; it was harder than pure copper and originally used to make tools and weapons‚ but was later superseded by metals and alloys with better properties. In later times bronze has been used for ornaments‚ bells‚ statues
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subject than any other. Recently‚ I was assigned a lab. The purpose was to let Copper Sulfate react with Aluminum and obtain Copper. Before the experiment‚ I set up the stoichiometric equation carefully‚ predicting the production of Copper using my assigned mass of Copper Sulfate. Additionally‚ I intentionally made Copper Sulfate an excess in my equation‚ since it would be dissolved in water and I would only have to collect Copper at the end‚ to get the highest percent yield. Unfortunately‚ I did not obtain
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state. If zinc completely reacts with HCL‚ then the theoretical yield of copper should be equivalent to the actual yield. Purpose: In this lab‚ we will determine the percent composition of a modern (post-1982) penny by using a strong acid to react and dissolve the zinc core‚ leaving only the copper coating. Once only copper remains‚ we will compare its mass to the entire mass of the penny to determine how much of a penny is copper and how much is zinc. Titration Experiment Day 1: 1. Obtain one
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determine the weight percentage of copper in brass. This was achieved by performing a redox titration known as iodometry. Copper‚ which was obtained from the brass‚ was used to react with iodide to produce iodine. Iodine was then titrated with thiosulfate. In this experiment‚ the amount of titrant dispensed correlates with the amount of copper; therefore‚ the amount of copper in brass was calculated by using the data recorded. In this experiment‚ the analyte is copper and the sample is brass. The concentration
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Density of Metals Problem: How does the mass and volume help determine the density of known metal samples? Hypothesis: When comparing the density of Zn(zinc) and Cu(copper)‚ you will find that Copper is more dense than Zinc. You can test this out by using the density formula D=m/v. Materials: * 2 metals (options: zn‚ al‚ or cu) * 3 samples of each metal (small‚ medium‚ and large) * Scale/Balance * Calculator * Water * Graduated Cylinder Safety: * Be prepared for your
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perfectly precise. You should‚ however‚ clearly label each curve. MC would be equal to AVC for every Type 1 mine firm. 2) Draw the short-run industry supply curve for the world copper market. Please indicate how much copper would be supplied in a given month if the price of copper were (a) $1‚500 per ton; (b) $1‚000 per ton; (c) $500 per ton; and (d) $200 per ton. To graph the supply curve‚ the marginal cost is used since in the short term the supply decision depends on his
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follows- * copper is 8‚888 psi * Aluminum is 6‚666 psi * Polyester is 9‚696 psi 3. Determine the Elastic Modulus of the specimens: * The Modulus of Elasticity for copper specimen is 16‚687 ksi.‚ figure 4. * The Modulus of Elasticity for Aluminum specimen is 89‚991 ksi‚ figure 5. * The Modulus of Elasticity for Polyester specimen is 136‚532 ksi‚ figure 6. Figure 4 Figure 5 Figure 6 4. Determine the Modulus of resilience and toughness of samples: * Copper: resilience=2304
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loan and variable rate debt. Exchange rate risk affects the repayment of the variable rate debt. The price risk associated with production of gold and copper. MML can mitigate and reduce these risks by entering into the future contracts and options. Future contract or option is suggested for MML who wants to hedge 50% of the production of gold and copper in March and April. In order to meet MML’s management request of low options premium payment‚ MML is advice to use put bear spread and strangle as their
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conducted a study about the said product‚ which is the homemade air conditioner‚ by making it themselves with the use of two plastic tubes‚ a copper tube‚ a cooler ‚ zippies and an ordinary electric fan that has already been used. To make the homemade air conditioner‚ first ‚ you should put the copper tube in a swirl formation on the front or on the back of the fan and to make the tube surely attached to the fan‚ secure them using
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potato Two pennies Two zinc-plated nails or screws Three pieces of copper wire A very small light bulb or LED light 1) Get a potato and cut it in half. Then make a small slit in each half just big enough to put a penny into. 2) Cut two pieces of copper wire and wrap one around one of the pennies a few times‚ and wrap the other one around the other penny a few times as well. 3) Take a third piece of copper wire‚ and wrap it around one of the zinc-plated nails or screws
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