Problem $1$: Combustion Process

Initial data:

Fuel is pure $C{H}_4$ with $p=5$ bar and $T=25$

C$.$ Oxidizer is air with $p=1\mathrm{.}013$ bar and $T$

$=25C,=2\mathrm{.}4.$ Pressure of the combusti$-$on products is equal to $p=1\mathrm{.}013$ bar. Changes in kinetic and potential energy are ignored. The combustion chamber is adiabatic.

Energetic calculations

$($a$)$ Calculate the temperature of the combustion products $($stream $11)$

$($b$)$ Calculate the molar mass of the combustion products

$($c$)$ Calculate the molar chemical exergy of the combustion products

$($d$)$ Calculate the enthalpy of the combustion products at $p=1\mathrm{.}013$ bar and $T=200C($stream $12).$