An intermediate reaction used in the production of nitrogen containing fertilizers is that b/w NH3 and O2
4NH3(g) + 5O2(g)--> 4NO(g) + 6H2O(g)
A 150.0-L reaction chamber is charged with reactants to the following partial pressures at 500 degrees C: P(sub NH3)= 1.3 atm, P(sub O2)= 1.5 atm. What is the limiting reactant?