Tuesday
July 29, 2014

Homework Help: chemistry

Posted by Emily on Sunday, September 2, 2012 at 6:09pm.

A 12.8 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 21.3 g.
What was the mass of iron in the sample of
ore?
Answer in units of g

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