Question $2$

Hydrocarbon fuel $(C_x{H}_y)$ is to be burnt in excess air and the composition of the flue gas is:

$($a$)$ Calculate the molar flow rate of air based on $1000mo\frac{l}{s}$ of flue gas.

$($b$)$ Calculate the percentage excess air.

$($c$)$ Comment on the amount of excess air and the consequences.

$($d$)$ Determine the ratio of $C$ to $H$ in the fuel.