The standard heat of reaction for the oxidation of ammonia is given below:
4 NH3 (g) + 5 O2 (g) → 4 NO (g) + 6 H2O (v)
ΔH°r = -904.7 kJ/mol
100 mol NH3/s and 200 mol O2/s at 25°C are fed into a reactor in which the ammonia is completely consumed. The product gas emerges at 300°C. Calculate the rate at which heat must be transferred to or from the reactor, assuming operation at approximately 1 atm.