Liquid octane (C8H18) enters the combustion chamber of a gas turbine steadily at 100 kPa, 25oC, and

Question:

Liquid octane (C8H18) enters the combustion chamber of a gas turbine steadily at 100 kPa, 25oC, and it is burned with air that enters the combustion chamber at the same state. Disregarding any changes in KE and PE, determine the adiabatic flame temperature (Taf) for
(a) Complete combustion with 100% theoretical air and
(b) Complete combustion with 200% theoretical air.