Determine the enthalpy of combustion $($in MJ$/$kg$)$ of fuel at $25\backslash$deg C and $1$ atm, using the

enthalpy of formation data from Table A$-26($provided below$).$

Fuel is Ethyl alcohol $$ C$2$H$5$OH$($l$)$ burned with $40\%$ excess air during a combustion process. Assuming complete

combustion and the water in the products is in the vapor state, determine also the enthalpy

of combustion $($in MJ$/$kg$)$ of the mixture.