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Chemistry, 30.05.2021 23:20 germaine88

You heat 3.784 g of a mixture of Fe3O4 and FeO to form 4.102 g Fe2O3. the mass percent of FeO originally in the mixture was: A: 94.4%
B: 32.8%
C: 67.2%
D: 22.7%
E: none of these

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You heat 3.784 g of a mixture of Fe3O4 and FeO to form 4.102 g Fe2O3. the mass percent of FeO origin...
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