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Parashar Chatterjee Grade: 11
        

Helium atom is two times heavier than a hydrogen molecule.At 298 K,the average kinetic energy of helium atom is______


energy of hydrogen molecule?


IT is given that for kinetic energy is independant of mass. But KE=1/2mv^2 so it does depend on mass doesnt it?

6 years ago

Answers : (1)

vikas askiitian expert
510 Points
										

kinetic energy of gas molecules =fkT/2 ,


it depends on temperature and degree of freedom of gas...


for hydrogen(di atomic) f=5 & for helium(monoatomic) f=3


so kinetic energy is independent of mass

6 years ago
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