Iron pyrite, commonly known as "fool's gold," is 46.5% Fe and 53.5% S. Part A. If the empirical formula and the molecular formula are the same, what is the molecular formula of the compound? Express your answer as a chemical formula. Part B. If the crystal contains 3.59 g of iron, how many atoms of iron are in the crystal? Express your answer to three significant figures and include the appropriate units.

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