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One mole of a gas at NTP is suddenly all...

One mole of a gas at NTP is suddenly allowed to expand to three times its volume. If `C_upsilon= 2 R`, then the final pressure of the gas will be nearest to

A

`0.1 atm`

B

`0.2 atm`

C

`0.4 atm`

D

`0.6 atm`

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