Question

Find the work possess for a Helium gas at 20⁰C.

Work = ____ kJ/kg

Answer 1

Gives

$\\T=273+20=293K\\W=?$

Gas eqution

PV=nRT

$W=PV$

W=nRT

$W=\frac{m}{M}RT$

$$W=\frac{1}{4}\times8.314\times(273+20)=609KJ/kg$$