Question

An air occupies in the tank with pressure and volume of 6.5 bar and 0.37 m3 at 48 °C.After

an isobaric expansion, the volume increased to 0.42 m3. Determine the final temperature in

unit °C and the mass of the gas.

Answer 1

$p=const,$

$T_2=\frac{V_2}{V_1}T_1=364~K,~t_2=91°C,$

$\nu=\frac{pV_1}{RT_1}=90~mol,$

$m=\nu M=2.6~kg.$