Question

What is the total mass of iron in 1.0 mole of `Fe_2O_3`?

Answer 1

`"1.0 mol Fe"_2"O"_3"` contains `"111.69 g Fe"`.

Explanation:

`"1.0 mol Fe"_2"O"_3"` contains `"2 mol Fe"` ions.

The molar mass of Fe is 55.845 g/mol.

`2"mol Fe"xx55.845"g/mol"="111.69 g Fe"`