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OpenStudy (anonymous):
Chalcopyrite (CuFeS2) is a principalmineral of copper. Calculate the number of kilograms of Cu in 3.71x10^3 kg of chalcopyrite.
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OpenStudy (zpupster):
we find the molar mass of Cu is 63.55g and the molar mass of Chalcopyrite (CuFeS2) is 183.5g we find percent Cu by (63.55/183.5) x 100% = 34.63% Now .3463 x (3.71 x 10^3) = your answer
OpenStudy (chmvijay):
@zpupster its not molar mass of Cu , its atomic mass of CU :)
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