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A helium atom is two times heavier than ...

A 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

Text Solution

Verified by Experts

The correct Answer is:
B
` E prop T `
`(E_(He))/(H_(2)) =(T_(He))/(T_(H_(2)))`, He and `H_(2)` at same temperature .
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