how is copper extracted from it's ore?
604420
Copper can be extracted from its ore by:\n\n1. Traditional mining\n (a) underground - sinking a vertical shaft into the Earth to an appropriate depth and driving horizontal tunnels into the ore.\n(b) open pit  - 90% of ore is mined by this method. Ores near the surface can be quarried after removal of the surface layers.\n\n2. Leaching\n\nThe ore is treated with dilute sulphuric acid. This trickles slowly through the ore dissolving copper to form copper sulphate. The copper is recovered by electrolytic refining. Advantages of this process are:\n\n    * much less energy is use than in traditional mining\n    * no waste gases are given off\n    * it can be used on ores with as little as 0.1% copper - for this reason, leaching extraction is growing in importance.\n\nA typical ore contains only 0.5% to 2.0% copper. \n\nConcentrating the ore :-\n\nThe ore is crushed, ground and then enriched (concentrated) by Froth Flotation.\n\nThe powdered ore is mixed with a special paraffin oil which makes the copper mineral particles water repellent. It is then fed into a bath of water containing a foaming agent which produces a kind of bubble bath.\n\nWhen jets of air are forced up through the bath, the water repellent copper mineral particles are picked up by the bubbles of foam. They float to the surface making a froth. The unwanted waste rock (gangue) falls to the bottom and is removed.\n\nThe froth is skimmed off the surface and the enriched ore (mainly the copper mineral) is taken away for roasting. The mixture of water, foaming agent and paraffin is recycled.\n\nAfter this stage the enriched ore now contains about 25% copper by mass.\n\nAlso check other details at  -\n\nhttp://en.wikipedia.org/wiki/Copper_mining
832425
Coins are made from gold, silver, copper, aluminum (in some cases) and more commonly by alloys of iron, nickel, copper, and tin.
941018
The only renewable mineral deposit that I saw I was in Andes (it was called 'salar '). The miners work this mine periodically (harvest), therefore it had thermal sources. This sources , deposit (all the time)  thermal waters, with same kind of minerals solved in it.\n\nRenewable mineral resources on to other planets? I don't know!
906641
Bornite is an important copper ore mineral. It ranks up there with many of the other copper ores such as chalcocite, chalcopyrite, covellite, digenite, cuprite and tetrahedrite. \nUses: Major ore of copper and as mineral specimens.\n\nSo, basically copper can be extracted from it.
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iron, copper, gold, tin.
758041
brass is an alloy of copper and zinc, unless we have its composition, we cant tell its specific heat.
289378
Refining of metal is a process used to extract impurities from the metal to make it "pure".  Gold, silver, and Platinum are some metals that are refined. In general ore is usually combined with a flux and then placed in a melting furnace and heated at very high temperatures until it turns into a molten material. The flux fuses with the undesired material. The flux is lighter than the precious metal and floats to the top. The molten material is poured into molds, like brick shape or an inverted cone.  The slag (the impurities) floats to the top and what you have left is a "button" of the precious metal.
568669
The yield of a mine related to the percentage of the ore.  It might be such a low concentration that it isn't worth it to mine it.  In my state, AZ, copper mines have a fixed price where if copper falls below that price, the miners already know they can't make money, so they hold off until the price rises to make it worthwhile.  Most mines do this.
46078
copper is one of many "transiton metals" which means it is one of the elements in the middle-lower part of the periodic table - groups 3 to 12, also called the d-block because they have electrons that occupy d orbitals.  other transition metals include zinc, magnesium, mercury, iron, gold, silver - altogether there are 40 of them.\n\ncopper is shiny, red-orangish in color, and is a very good conductor of both heat and electricity.
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Ores have been deposited over the length of geological history. Most sources of ore must be categorized as non-renewable because the exploitation is way faster than the regeneration rate.\n\nNew ore deposits are formed all the time, e.g. wherever rust carried off by water collects. It takes quite a long time to make these worth exploiting, though.\n\nIn case of riverine deposits (e.g. of gold) it is possible to maintain an equilibrium: the ancients of Kolchis used ram vleeces to collect gold dust in the rivers. As long as the mother lode continued to provide detritus to the river, the gold was collected as a renewable resource.\n\nWhich brings me to theoretical exploitation of volcanic deposits - either from lava deposits, or at the mid-Atlantic ridge. There still is an equilibrium of material subducted in subduction zones like before the Californian coast and material brought up in the Atlantic. One might talk about a renewable resource in this case.
355368
Process used in mixing air into a compound to separate minerals.\n\nCheck out the following link:
751234
An acid dip will do it. The problem being that the acid will eat the zinc too.  SO, use a dilute acid, such as muriatic. Which is dilute hydrochloric acid.  Nitric, and phosphoric acid would also work. Make sure you don't use a concentrated acid, as it is not needed, and can be quite dangerous.  There is a good chance that a commercial AC coil cleaning solution (inhibited dilute phosphoric I believe) would do the job.  Once the copper is removed, make sure to use tongs to remove the penny, and then rinse it well to stop the action of the acid.
929154
copper can't produce electricity. it conducts electricity
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Copper is used as a conductor and as a easily maliable (formable) metal.  It is also naturally anti-bacterial.
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Copper can react with nitric acid on two different ways based on the concentration of nitric acid.\n\nIf cold and dilute nitric acid is used, then the reaction yields copper(II) nitrate, nitrous oxide(N2O) and water.\n\nCu + HNO3 ----- Cu(NO3)2 + N2O + H2O\n\nIf hot and conc. nitric acid(a stronger oxidising agent) is used, the reaction yields copper(II) nitrate, nitrogen dioxide(NO2) and water.\n\nCu + HNO3 ----- Cu(NO3)2 + NO2 + H2O\n\nP.S. - Balance the equations yourself(might take some time but use the oxidation no. method)
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Copper's atomic mass is 63.55 grams/mole.  There are 6.02*10^23 copper atoms in mole of copper.  Thus, 1 atom Cu * 1 mol Cu/6.02*10^23 atoms Cu * 63.55 gCu/1 mol Cu = 1.056 * 10^-22 grams/atom Cu
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2Cu + O2 ---> 2CuO,          \nThis is copper oxide or cupric oxide or copper( II )oxide\n\n4 Cu + )2---> 2Cu2O\nCopper also combines with oxygen as Cu2O, cuprous oxide , or copper(I) oxide