Liquid n-butane at T0, is sprayed into a gas turbine with primary air flowing at 150 lbf/in 2, 700 R in a stoichiometric ratio. After complete combustion, the products are at the adiabatic flame temperature, which is too high so secondary air at 150 lbf/in 2, 700 R is added, with the resulting mixture being at 2500 R. Show that Tad 2500 R and find the ratio of secondary to primary air flow.