23) The combustion of ammonia in the presence of oxygen yields NO2 and H2O (5 pts): 4NH3(g)+7O2(g)4NO2(g)+6H2O(g) A) The combustion of 50.2g of ammonia with 331g of oxygen produces g of NO2. B) Calculate the % yield of NO2 if 110.8 of NO2 is produced A) gNO2 B) %