Consider air to be 21.0 mole percent O2 and the balance N2. Take the atomic masses of the component elements to be H:1.00794,C:12.0107,N:14.0067, and O:15.999. Hence, the molecular weight of air is about 28.85. For the case of 4110kg of air being burned with 252kg of C5H12, determine the excess reactant and the percent by which it is in excess. is in excess by %