O2––––––––>H2O 2g 16g 18 g 1 mol 0.5 mol 1 mol 10 g of H2−5 mol and 64 g of O2=2mol ∴ In this reaction,oxygen is the limitig reagent so amount of H2O produced depends on that of O2 Since 0.5 mol of O2 gives 1 mol H2O ∴ 2 mol of O2 will give 4 mol H2O