Calculate the number of iron atoms in a 60.0 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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Step 1
First, we need to find the molar mass of Fe2O3. The molar mass of iron (Fe) is 55.845 g/mol and the molar mass of oxygen (O) is 16.00 g/mol. So, the molar mass of Fe2O3 is (2*55.845 g/mol) + (3*16.00 g/mol) = 159.69 g/mol. Show more…
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