Helium atom is two times heavier than a Hydrogen molecule at 298 K, the average kinetic energy of Helium is
Two times that of a hydrogen molecule
Same as that of a hydrogen molecule
Four times that of a hydrogen molecule
Half that of a hydrogen molecule
As we learnt in
Kinetic Theory of Gases -
They collide with each other and with the wall of the container. Pressure is exerted by the gas as a result of collision of the particles with the walls of the container.
-
so energies will be same for He and H2 at same temperature.
Option 1)
Two times that of a hydrogen molecule
Incorrect
Option 2)
Same as that of a hydrogen molecule
Correct
Option 3)
Four times that of a hydrogen molecule
Incorrect
Option 4)
Half that of a hydrogen molecule
Incorrect
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