if 8.0g of h2 reacts and 72 g of h2o is produced, how much o2 is consumed in the reaction

Answer 1

2H2 + O2 = 2H2O

^{72 g H2O}/₁ × ^{1 mol H2O}⁄_{18.01 g H2O} × ^{1 mol O2}⁄_{2 mol H2O} × ^{32 g O2}⁄_{1 mol O2} = 64 grams of O₂