M$2.$I$2$

Upon lighting, a household propane torch burns the propane fuel at a rate of $2\frac{g}{h}r$ via combustion reactions. Answer the following questions pertaining to this reaction.

$($a$)$ If the combustion is accomplished at $100\%$ conversion and via complete combustion, how many moles of $C{O}_2$ are produced each hour? How many grams of oxygen react each hour?

$($b$)$ If air was supplied to the propane torch at a $20\%$ excess and combustion still proceeds at $100\%$ conversion and via complete combustion, how many grams of air flow into the propane torch each hour?

$($c$)$ If the combustion proceeds at $100\%$ conversion and via incomplete conversion with a $C\frac{O_2}{C}O$ selectivity of $4\mathrm{.}0,$ how many moles of $C{O}_2$ are produced each hour?