Question

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 ?

Answer 1

Internal energy due to thermal motion is equal to 5/2 × P × V

Mass = 1kg

Density = 4kg / m^3

Volume = 1/5 m^3

Pressure = 8 × 10^4 n/m^2

Energy = 5/2 × 1/5 × 8 × 10^4

Answer =Energy = 4 × 10^4 Joules

Answer 2

answer is 5×10^4

For solution,just see the uploaded photo