Asked by Nick

A 33.8 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 20.7 g.
What was the mass of iron in the sample of
ore?

Answers

Answered by DrBob222
All of these are done the same way.
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