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Two kg of a monoatomic gas is at a press...

Two kg of a monoatomic gas is at a pressure of `4 xx 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 ?

A

`10^(3)J`

B

`10^(5)J`

C

`10^(4)J`

D

`10^(6)J`

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