1. Balance this chemical equation of the combustion of methane: CH4 + 0 CO, + H20 2. What is the theoretical yield or the maximum mass of water (in grams) that may be formed from the reaction of 5.00 grams of methane, CH4? Follow the three steps above and show your work below. (Answer: 11.2 g) (NOTE: In this problem, oxygen is "in excess." When there is an excess of one reac- tant that means you can assume all of the other reactant gets converted to product. (In other words, you don't have to worry about it in the calculation.) We can say "methane reacts completely" or "methane is the limiting reactant" since the calculation is based on this assumption.) Theoretical yield of water:. grams 3. Now suppose there is an excess of methane and only 5.00 grams of 0. (Oxygen is now the limiting reactant.) What is the theoretical yield of water in this case? Follow the (Answer: 2.82 g) three steps above and show your work below. Theoretical yield of water:. grams