Consider aviation gasoline (approximated as C8H18 ) is burnerd with air in a combustion chamber of a jet engine, where the thrust is augmented by injecting methanol (CH3OH) into the combustion chamber to be burned with the main fuel at operating equivalence ratio of 0.5 . If the mass ratio of methanol to gasoline is 1 to 9 , write down the combustion equation assuming complete combustion and calculate the fuel to air ratio