Kinetic Theory Gases

A diatomic ideal gas is used in a Carnot engine as the working substance

A diatomic ideal gas is used in a Carnot engine as the working substance. If during the adiabatic expansion part of the cycle the volume of the gas increases from V to 32 V, the efficiency of the engine is

One kg of a diatomic gas is at a pressure

One kg of a diatomic gas is at a pressure of 8 × 10⁴ N/m². The density of the gas is 4 kg/m³. What is the energy of the gas due to its thermal motion?

3 × 10⁴ J
5 × 10⁴ J
6 × 10⁴ J
7 × 10⁴ J

1 mole of a gas with γ = 7/5 is mixed with 1 mole of a gas with γ = 5/3

1 mole of a gas with γ = 7/5 is mixed with 1 mole of a gas with γ = 5/3, then the value of γ for the resulting mixture is

2/5
24/16
12/7
7/5