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Ore of a metal M(X) to overset("roasting")to "Roasted ore" underset("absence of"O_(2))overset(Delta with (X)) to "Metal M" Ore of metal M(Y) to overset("calcination")to "Roasted ore" underset("absence of"O_(2))overset(Delta with (X)) to "Metal M" |
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Answer» X=chalcocite Y=malachite |
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