Acetylene $($C$2$H$2)$ gas at $25$C is burned in a steady flow combustion chamber with $40$ percent excess air that also enters at $25$C$.$ Thxe products leave the combustion chamber at $1500$ K$.$ Assuming combustion is complete, determine the air fuel ratio and the heat transfer rate $($KJ$/$Kmol of fuel$).$ Show Steps and Calculations