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Flask holds two gases in a given mass ratio at one temperature: ratio of average kinetic energy per molecule

The same question, asked 4 times: 26 Jun 2022*, 30 Jan 2023*, 15 Apr 2023*, 7 Apr 2025. Every wording below, oldest first.

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  1. Question 1

    26 Jun 2022

    97
    A flask contains argon and oxygen in the ratio of 3:23:2 in mass and the mixture is kept at 27∘C27^{\circ}C. The ratio of their average kinetic energy per molecule respectively will be:

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  2. Question 2

    30 Jan 2023

    102
    A flask contains hydrogen and oxygen in the ratio of 2:12:1 by mass at temperature 27∘C27^{\circ}C. The ratio of average kinetic energy per molecule of hydrogen and oxygen respectively is:

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  3. Question 3

    15 Apr 2023

    8
    A flask contains Hydrogen and Argon in the ratio 2:12:1 by mass. The temperature of the mixture is 30∘C30^{\circ}C. The ratio of average kinetic energy per molecule of the two gases (K argon/K hydrogen) is: (Given: Atomic Weight of Ar=39.9Ar = 39.9 )

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  4. Question 4

    7 Apr 2025

    82
    The helium and argon are put in the flask at the same room temperature ( 300 K ). The ratio of average kinetic energies (per molecule) of helium and argon is : (Give : Molar mass of helium =4 g/mol= 4\text{ }g/mol, Molar mass of argon =40 g/mol= 40\text{ }g/mol )

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