2h2 + o2 → 2h2o if 720.8 g of water are produced from the reaction, calculate the following: moles of h2: moles of o2: grams of o2: ***i am in urgent need of ***

Magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. trial 1: trial 2: data mass of empty crucible with lid trial 1: 26.688 trial 2: 26.681 mass of mg metal, crucible, and lid trial 1: 26.994 trial: 2 26.985 mass of mgo, crucible, and lid trial 1: 27.188 trial 2: 27.180