Question

Calculate the internal energy of one mole of nitrogen gas at pressure 50k pa occupying at V=5.10cm

Answer 1

$i=5,$

$U=\frac i2 \nu RT=\frac i2pV,$

$U=\frac 52\cdot 5\cdot 10^4\cdot 5.1\cdot 10^{-6}=0.64~J.$