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Radhika Batra Grade: 11
        Helium atom is two times heavier than a hydrogen molecule. At 298 K, the average kinetic energy of a helium atom is

a. two times that of a hydrogen molecule
b. same as that of a hydrogen molecule
c. four times that of a hydrogen molecule
d. half that of a hydrogen molecule
3 years ago

Answers : (1)

Navjyot Kalra
askIITians Faculty
654 Points
										Sol. According to kinetic theory, average kinetic energy (∈) = 3/2kBT

Where, kB is Bo1tzmann’s constant. Since, it is independent of mlar mass, it will be same for He and H2 at a given temperature.
3 years ago
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