Is silver  a ore or combination of certain metal and chemicals?
480516
Silver is an element.  It is found in rocks that are called ore.  It usually occurs as a sulfide mineral, such as AgS2, or in small amounts in a sulfide mineral based on another metal, such as PbS2.\n\nGold is Au.  Silver is Ag.
473571
1 ounce of silver = 28.3495231 grams
815129
Silver properly combined with a suitable substrate is ok.
320627
Silver's a hedge against inflation, and with the US budget deficits the way that they are, investors are looking to hedge.  Also, silver is an industrial commodity, and worldwide demand for silver and other commodities has increased substantially over the past couple of years.  All of the metals are up: gold, copper, platinum, and palladium.\n\nAnother reason is that there is an exchange traded fund (EFT) for silver and for gold coming out soon, and the fund is required to actually own silver in the amounts of the fund value.  Basicially, it will increase the demand for silver even more, and investors are buying it now, to be positioned for when the fund starts trading it.
339232
Yes, the reaction would spontaneously occur because Sn is higher on the activity series than Ag.\n\nSn(s) + 2AgNO3(aq) => Sn(NO3)2(aq) + 2 Ag(s)\nThe net ionic is\nSn(s) + 2Ag+(aq) => Sn+2(aq) + 2 Ag(s)\n\nI don't remember the oxidation number for Sn.  2 sounds about right.\n\nIt would turn a silver nitrate solution to a tin nitrate solution, and you'd see metallic silver precipitate out.
264929
As a recreational prospector, I prefer gold to silver. When you find gold, you usually don't have to do any processing, you have gold. Silver, on the other hand is usually locked up in some kind of ore and needs further processing, you just don't find silver nuggets.
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An ore has minerals or metals suspended in a base, unwanted material that needs to be refined to make the pure mineral or metal usable.\n\nA gem is a crystaline material that has some intrinsic value.
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.
307574
No, it's Ag2S. The 2 is a subscript, denoting 2 Silver atoms to 1 Sulphur atom. Silver has a valency of 1+, while Sulpur has a valency of 2-, hence 2 Silver atoms are needed to balance with 1 Sulphur atom to form a compound. Besides, the equation would make sense then. 2 Silver atoms and 1 Sulphur atom on both sides of the equation, the equation is now balanced. 10 marks please, thank you!
486351
Cu.\nIt is a transition metal with ions of Cu+ and Cu2+.
35890
Unfortunately, a lot of substances are a mixture of metals and nonmetals. But here are a few suggestions:\n\n-Aluminum foil. Need I say more?\n-Dry ice, carbon dioxide, is made up of two nonmetals\n-Potassium is a metal you should be able to find as a vitamin. They also make iron and calcium supplements.\n-You might be able to find a mercury thermometer.\n-Helium balloons. \n-Gold, silver, and copper jewelry (although most jewelry will actually be alloys of a few metals)\n\nI hope that helped.
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No they don't.  The silver stuff you see is Amalgram.  In fact most now use another substance- or two other substances actually, both of which are white colored and not quite as durable.  Composite fillings and Isonomers.
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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.
653314
Coal, iron ore, copper, chromium, antimony, mercury, gold, barite, borate, celestite (strontium), emery, feldspar, limestone, magnesite, marble, perlite, pumice, pyrites (sulfur), clay, arable land, and hydropower.
48146
well it is obvious, the answer is 544 grams of pure silver!!
1131903
Do you mean bullion or silver for jewelry? If bullion, any coin store can sell you silver bullion.  If you need silver for jewelry making, you buy it from a jewelry supply catalog, it comes in the form of small beads that must be melted and molded.\n\nSilver can be  stored anywhere, it is an inert substance.
346921
Of those three are elements: Gold, Platinum, and Aluminium\n\nOne of them is a molecular compound: Sugar (each sugar molecule is the same, but is composed of many elements)\n\nOne of them is an alloy: Brass (composed of a melt of several metalic elements)\n\nReally depends of what your definition of "pure substance" is.