250 grams of propane are burned and it is known that the combustion reactor only produces 55% of the complete combustion, although a required 20% theoretical excess air is fed. Calculate a) How much air is fed to the reactor b) The composition of the exhaust gases in grams

a) How much air is fed to the reactor in grams

b) The composition of the exhaust gases in grams

N2

C0

CO2

H2O

O2

Please help