Ammonia is oxidised with air to form nitric oxide in the first step to produce nitric acid.  The reaction occurs in a well insulated continuous reactor based on the stoichiometry:
 
4 NH3 + 5 O2 → 4 NO + 6 H2O
 
If 100 mol min-1 of ammonia at 25°C, 8 bar is fed to the reactor and air at 150°C, 8 bar is  used with 50% excess, if the reaction goes to completion:
 
a.  find the composition of the product.
 
b.  perform an energy balance in the system writing down relevant equations.
 
c.  an estimate for the outlet temperature of the reactor.