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The average translational kinetic energy...

The average translational kinetic energy and the rms speed of molecules in a sample of oxygen gas at 300 K are `6.21 xx 10^(-21) J` and 484 m/s respectively. Then the corresponding values at `600^@K` are

A

`12.42 xx 10^(-21)J, 968 m/s`

B

`8.78 xx 10^(-21) J, 684 m/s`

C

`6.21 xx 10^(-21) J, 968 m/s`

D

`12.42 xx 10^(-21) J, 684 m/s`

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