(Answered) An ore contains fe3o4 and no other iron the iron in a

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An ore contains Fe₃O₄and no other iron. The iron in a 39.3-gram sample of the ore is all converted by a series of chemical reactions to Fe₂O₃. The mass of Fe₂O₃ is measured to be 10.6 g. What was the mass of Fe3O4 in the sample of ore?
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