Oxygen masks for pruducing O2 in emergency situations contain potassium superoxide, KO2. It reacts with CO2 and H2O in exhaled air to produce oxygen:
4 KO2(s) + 2 H2O(g) +4CO2(g) = 4 KHCO3(s) + 3O2(g)
If a person wearing such a mask exhales 0.702 gCO2/min. how many grams of KO2 are consumed in five minutes?