A gas contains 75.0 wt% methane, 10.0% ethane, 5.0% ethylene, and the balance water.
(a) Calculate the molar composition of this gas on both a wet and a dry basis and the ratio (mol H2O/ mol dry gas).
(b) If 100 kg/h of this fuel is to be burned with 30% excess air, what is the required air feed rate (kmol/ h)? How would the answer change if the combustion were only 75% complete?