HW $16(2)-3$: $(12$ points$)$ A gaseous fuel with a volumetric analysis of $70$ percent CH$4,10$ percent H$2,$ and $20$ percent N$2$ is burned to completion with $130$ percent theoretical air. Determine: $($a$).(6$ pt$)$ The air$$fuel ratio, AF$.($b$).(6$ pt$)$ The fraction of water vapor that would condense if the product gases were cooled to $25$C at $1$ atm $($Hint: determine the ratio of mw$/$mv where mw is the mass of the condensed water and mv is the mass of the water vapor before cooling$).$