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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?

5 years ago


Answers : (1)


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

5 years ago

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