A saturated hydrocarbon is burned and the following Orsat Analysis is obtained:

$10\mathrm{.}63\%$ CO$2,1\mathrm{.}18\%$ CO$,3\mathrm{.}82\%$ O$2$ and the balance nitrogen. Determine $($a$)\%$

excess air supplied $($b$)$ atomic ratio of C to H and $($c$)$ speculate what is the fuel.