One kg of a diatomic gas is at a pressure of $8 × 10^4\  N/m^2$. The density of the gas is $4\  kg/m^3$. What is the energy of the gas due to its thermal motion ?
  • A$6 × 10^4\  J$
  • B$7 × 10^4\  J$
  • C$3 × 10^4\  J$
  • D$5× 10^4\  J$
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