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  • Solve! Helium atom is two times heavier than a Hydrogen molecule at 298 K, the average kinetic energy of Helium is

 Helium atom is two times heavier than a Hydrogen molecule at 298 K, the average kinetic energy of Helium is

  • Option 1)

     Two times that of a hydrogen molecule

  • Option 2)

    Same as that of a hydrogen molecule 

  • Option 3)

     Four times that of a hydrogen molecule

  • Option 4)

     Half that of a hydrogen molecule

 

Answers (1)

best_answer

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.

-

 

\frac{E_{He}}{E_{H_{2}}}= \sqrt{\frac{T_{He}}{T_{H_{2}}}}          

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

Posted by

divya.saini

View full answer

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