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A flask contains Hydrogen and Argon in the ratio 2 : 1 by mass. The temperature of the mixture is 30°C. The ratio of average kinetic energy per molecule of the two gases (K argon/K hydrogen) is: (Given : Atomic Weight of Ar = 39.9)

1. 2
2. 1
3. 39.9
4. 2 9 . 39

Correct answer: 1

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