Helium atom is two times heavier than a hydrogen molecule at 298 K, the average kinetic energy of helium is Options: A . &nbspTwo times that of a hydrogen molecule B . &nbspSame as that of a hydrogen molecule C . &nbspFour times that of a hydrogen molecule D . &nbspHalf that of a hydrogen molecule

Answer: Option B : B E H e E H 2 = √ T H e T H 2 so energies will be same for He & H 2 at same temperature.

Helium atom is two times heavier than a hydrogen molecule at 298 K, the average

Question - Helium atom is two times heavier than a hydrogen molecule at 298 K, the average kinetic energy of helium is

Options:

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

Answer: Option B
:
B

\frac{E_{H e}}{E_{H_{2}}} = \sqrt{\frac{T_{H_{e}}}{T_{H_{2}}}}

so energies will be same for
He &

H_{2}

at same temperature.

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