Liquid propane $($C$3$H$8)$ at $25$C$,1$ atm, enters a wellinsulated reactor operating at steady state. Air enters at the same temperature and pressure. For liquid propane, hf $118,900$ kJ$/$kmol$.$ Determine the temperature of the combustion products, in K$,$ for complete combustion with $($a$)$ the theoretical amount of air. $($b$)300\%$ of theoretical air.