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Helium atom is two times heavier than a ...

Helium atom is two times heavier than a hydrogen molecule. At 289 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

Text Solution

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Kinetic energy per mole or per molecule of a gas depends only on the temperature and not on the nature of the gas.
`KE=(3)/(2)RT`
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