7.20g of potassium sulfate reacts with the excess oxygen gas in a single displacement reaction, how many grams of oxygen are consumed in this reaction

The balanced chemical reaction:

K2SO4 + O2 = 2KO2 + SO2

Assuming that the reaction is complete, all of the potassium sulfate is consumed. We relate the substances using the chemical reaction. We calculate as follows:

7.20 g K2SO4 (1 mol / 174.26 g) (1 mol O2 / 1 mol K2SO4) (32 g / 1 mol) = 1.32 g O2 consumed in the reaction.