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An Iron Ore, Magnetite, Contains Only Iron and Oxygen

Question 11

Multiple Choice

An iron ore, magnetite, contains only iron and oxygen. In refining 100.0 g of the ore, 72.35 g of iron are obtained. What is the empirical formula of the ore?


A) Fe2O3
B) FeO2
C) Fe2O5
D) Fe3O4
E) FeO

Correct Answer:

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