Thermodynamics homework.

Question: An adiabatic compressor is used to continuously compress propane ideal gas from

$0\mathrm{.}8$ MPa to $4$ MPa and $500$oC in a steady state process. For inlet temperatures of

$100$oC$,200$oC$,300$oC$,$ and $400$

oC

$($a$)$ Compute the work required per mole of propane through this compressor.

$($b$)$Compute the efficiency through this compressor