In the first step of the Ostwald process for the synthesis of nitric acid, ammonia is converted to nitric oxide by the high-temperature reaction 4NH3 (g) + 5O2 (g) --> 4NO (g) + 6H2O (g). (a) How is the rate of consumption of O2 related to the rate of consumption of NH3? (b) How is the rate of formation of NO related to the rate of consumption of NH3? (c) How is the rate of formation of H2O related to the rate of consumption of NH3?