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Helium molecule is two times heavier tha...

Helium molecule is two times heavier than hydrogen molecule at 298 K . According to kinetic theory, the average kinetic energy of helium at 298 K is

A

Two times higher than a hydrogen molecule

B

Four times higher than a hydrogen molecule

C

Same as that of hydrogen molecule

D

Half of a hydrogen molecule

Text Solution

Verified by Experts

The correct Answer is:
C
Kinetic energy is independent of mass and is dependent on temperature.
`K.E = (3)/(2) KT`
`therefore` Average Kinetic energy of helium at 298 k is same as that as of a hydrogen molecule.
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