Given the following chemical reaction: 2 O2 + CH4 CO2 + 2 H2O What mass of CH4 is required to completely react with 100 grams of O2?

2 O2 + CH4 CO2 + 2 H2O  What mass of CH4 is required to completely react with 100 grams of O2?  mass CH4 = 100 g O2 x (1 mol O2 / 32 g) x (1 mol CH4 / 2 mol O2) x (16.05 g / 1 mol CH4)   25 grams CH4