In an experiment, 23.4g of iron sulphide, FeS (s) are added to excess oxygen, and 16.5 grams of iron (III) oxide, Fe2O3(s) are produced. the balanced equation for the reaction is:
4FeS(s)+ 7O2(g) - 2 Fe O3(s) + 2 SO2(g)
Calculate the precent yeild of iron (III) oxide in the experiment.