Question

helium atom is two times heavier than hydrogen molecules.at 15 degree Celsius the average kinetic energy of helium atom is
a) twice that of hydrogen

(b) same as that of hydrogen four times

(c) four times that of hydrogen

(d) half that of hydrogen



please answer it fast ​

Answer 1

Answer:

Kinetic energy per mole or per molecule of a gas depends only on the temperature and not on the nature of the gas.

KE=

2

3

RT

So, average kinetic energy of a helium atom is the same as that of a hydrogen molecule.

Answer 2

Answer:

I think it will be twice of hydeogen