$1kg$ of corn biomass

$0\mathrm{.}6,$ and ash $=2\mathrm{.}7\%[$dry wt$.$ basis$])$ is burned with $20\%$ excess air in a

combustion.

Determine the volumetric composition of each gas in the product

gas stream. Assume that all the $S$ and $N$ from the biomass are

converted into $S{O}_2$ and $N{O}_2,$ but nitrogen from air will be retained

as nitrogen gas.

Please write the detailed steps on how you obtain the final answer

and upload your answer together with the working as picture or

document under this question.

Can someone please explain it in detail