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6. Ammonia is oxidized to nitric oxide in the following reaction: 4NH3+5O24NO+6H2O a. If ammonia is fed to a continuous reactor at a rate of 115.0kmolNH3/h, what oxygen feed rate ( kmol/h ) would correspond to 60.0% excess O2 ? b. Assume that the reaction proceeds to completion with all of the NH3 being consumed. Carry out a degrees-of-freedom analysis using the balance method of your choice (molecular, atomic, or extent of reaction), and determine the composition of the product stream