exrem. $3(30$ pts$)$ Acetylene gas $(C_2{H}_2)$ at $25C$ enters a steady$-$flow combustion chamber where it is mixed $24\mathrm{.}6$ cicess air at $37C.$ The products of combustion leave the combustion chamber at $847C.$ Assuming The air$-$finction and that water in the products is in the vapor phase, calculate:

b$)$ The ain$-$fuel ratio,

c$)$ The heat transfer of the gas generated per $kg$ of fuel Acetylene$),$ and

c$)$ The heat transfer per $kg$ of fuel for this process.