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July 5, 2015

Homework Help: Chemistry

Posted by Anonymous on Sunday, October 3, 2010 at 9:18pm.

An ore contains Fe3O4 and no other iron. The
iron in a 51.98 gram sample of the ore is all
converted by a series of chemical reactions to
Fe2O3. The mass of Fe2O3 is measured to be
32.8 grams. What was the percent Fe3O4 in
the sample of ore?
Answer in units of %.

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