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Two kg of a monoatomic gas is at a pressure of 4 × 10 4 N/m 2 . The density of the gas is 8 kg/m 3 . What is the order of energy of the gas due to its thermal motion ?

1. 10 4 J
2. 10 3 J
3. 10 5 J
4. 10 6 J

Correct answer: 10 4 J

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