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Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?
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What mass of iron must be in a hot pack to provide -335kj of heat when the iron reacts with oxygen and is converted to iron (111) oxide according to the following thermochemical equation? 2fe(s) + 1.5o2(g)—> fe2o3(s) delta h= -824.2kj/mol
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What is the chemical defination of pure substance...
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