Question

A diatomic gas $(\gamma =1.4)$ does $400J$ of work when it is expanded isobarically. The heat given to the gas in the process is _______$J.$

Answer 1

Answer: 1400

$Q=n{C}_p\Delta T=\frac{nv}{v-1}R\Delta T$
$Q=\frac{v}{v-1}\omega =\frac{1.4}{0.4}\times 400=1400J$