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A helium atom is two times heavier than ...

A helium atom is two times heavier than a hydrogen molecule. At `298 K`, the average kinetic energy of a helium atom is

A

two times that of hydrogen molecule

B

same as that of hydrogen molecule

C

four times that of hydrogen molecule

D

half that of hydrogen molecule

Text Solution

Verified by Experts

The correct Answer is:
B
Average KE depends only on temperature and does not depends upon the nature of the gas.
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Knowledge Check

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

    A
    two times that of hydrogen molecules
    B
    same as that jof hydrogen molecules
    C
    four times that of hydrogen molecules
    D
    half that of hydrogen molecules

  • Helium atom is two times heavier than a hydrogen molecule at 298 K. The average kinetic energy of helium is

    A
    two times that of hydrogen molecule
    B
    same as that of hydrogen molecule
    C
    four times that of hydrogen molecule
    D
    half that of hydrogen molecule

  • Helium atom is tow times heavier then a hydrogen molecule at 298 K, the average kinetic energy of helium is

    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
    • MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-STATES OF MATTER-Exercise 2 (Miscellaneous Problems)
    1. A helium atom is two times heavier than a hydrogen molecule. At 298 K,...

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    2. As the temperature is raised from 20^(@)C to 40^(@)C the averge kineti...

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    3. The compressibility of a gas is less than unity at STP, therefore,

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    4. 3.2 g of S is heated to occupy a volume of 780 ml at 450^(@)C and 723 ...

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    5. If density of a certain gas at 30^(@)C and 768 Torr is 1.35kg//m^(3), ...

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    6. The density of phosphorus vapour at STP is 5.54 " gL"^(-1). Hence, mol...

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    7. The intermolecular interaction that is dependent on the inverse cube o...

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    8. If Z is a compressibility factor, van der Waals' equation at low press...

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    9. The compressibility factor of gases is less than unity at STP. Therefo...

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    10. For the non-zero volume of the molecules, real gas equation for n mol ...

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    11. A 34.0 L cylinder contains 212" g"O(2) gas 27^(@)C. What mass of O(2)...

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    12. At 298 k, which of the following gases has the lowest average molecula...

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    13. Select the correct statements.

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    14. Which of the following gases follows non-ideal behaviour?

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    15. To liquefy gaseous substances whose critical temperatures are below ro...

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    16. NH(3) gas is liquefied more easily than N(2). Hence

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    17. A gas at a pressure of 5.0 atm is heated from 0^(@)C to 546^(@)C and s...

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    18. At 400 K, the root mean square (rms) speed of a gas X (molecular weigh...

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    19. Which assumption of kinetic molecular theory is not followed when a re...

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    20. A 100 mL flask contained H(2) at 200 Torr, and a 200 mL flask containe...

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