Calculate the number of iron atoms in a 80.0 g sample of iron(III) oxide (Fe2O3). Be sure your answer has a unit symbol if necessary, and round it to 3 significant digits.
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The molar mass of Fe2O3 can be calculated by adding the atomic masses of iron (Fe) and oxygen (O) in the compound. Fe: 55.85 g/mol O: 16.00 g/mol Molar mass of Fe2O3 = 2(Fe) + 3(O) = 2(55.85) + 3(16.00) = 159.70 g/mol Show more…
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