Iron pyrite, commonly known as “fool’s gold,” is 46.5% Fe and 53.5% S. (7.1, 7.2, 7.3, 7.4, 7.5)
a. If the empirical formula and the molecular formula are the same, what is the molecular formula of the compound?
b. If the crystal contains 4.85 g of iron, how many atoms of iron are in the crystal?
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