A fuel contains $80\%C,12\%H2,3\%S,$ and $5\%$ ash.

Calculate the stoichiometric air$/$fuel ratio by mass and by

mole. A fuel contains by mass $88\%$ carbon, $1\%$ sulfur, $8\%$ hydrogen, and $3\%$ silica ash. Calculate the stoichiometric air$/$fuel ratio by mass