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October 1, 2014

Homework Help: AP Chemistry

Posted by Rafael on Monday, September 3, 2012 at 9:56pm.

A 7.6 g sample of iron ore is treated as follows.
The iron in the sample is all converted by a
series of chemical reactions to Fe2O3. The
mass of Fe2O3 is measured to be 12.9 g. What
was the mass of iron in the sample of ore?
Answer in units of g

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