A mass of diatomic gas $$(\gamma = 1.4)$$ at a pressure of 2 atmospheres is compressed adiabatically so that its temperature rises from 27^oC to 927^oC. The pressure of the gas in the final state is

When 1 kg of ice at 0^oC melts to water at 0^oC, the resulting change in its entropy, taking latent heat of ice to be 80 cal/^oC, is

During an isothermal expansion, a confined ideal gas does $$-$$ 150 J of work against its surroundings. This implies that

A monatomic gas at pressure P₁ and volume V₁ is compressed adiabatically to $${{1 \over 8}^{th}}$$ of its original volume. What is the final pressure of the gas?