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in Physics by (51.1k points)

The average translational energy and the rms speed of the molecules in a sample of oxygen gas at 300 K are 6.21 x 10-21 J and 484 m/s respectively. Assuming ideal gas behaviour, the corresponding values at 600 K are nearly

(a) 12.42 x 10-21 J, 968 m/s 

(b) 8.78 x 10-21 J, 684 m/s 

(c) 6.21 x 10-21 J, 968 m/s 

(d) 12.42 x 10-21 J, 684 m/s

1 Answer

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Correct Answer is:(d) 12.42 x 10-21 J, 684 m/s

Average translational energy of a molecule = 3/2 KT ∝ T, and rms speed = (3RT/M) ∝ T.

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