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A vessel contains a mixture of one mole ...

A vessel contains a mixture of one mole of oxygen and two moles of nitrogen at 300K. The ratio of the average rorational kinetic energy per `O_2` molecules to that per `N_2` molecules is

A

1 : 1

B

1 : 2

C

2 : 1

D

Depends on the moments of inertia of the two molecules

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