What mass iron(III) oxide could be produced from 8.2 mol of oxygen gas in the synthesis of iron(III)?(Balanced equation)

Answer 1

4Fe + 3O2 ==> 2Fe2O3

Using the coefficients in the balanced equation, convert 8.2 moles oxygen to moles Fe2O3.

Now convert moles Fe2O3 to grams. grams = moles x molar mass.