Liquid hexane tuells burned in an isobanc, steady-how burner with 60% excess ait. The air and fuel enter the bumer at 25°C and the combustion products leaves at 827" a) (10 points) Determine the stoichiometric air amount ath b) (10) points) Calculate the air tuel ratio c) (10 points) Determine the mole fraction of CO2 d) (30 posts) How much heat is released by this burner when the combustion is complete?