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March 30, 2017

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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?

  • chemistry - ,

    All of these are done the same way.

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