The expression of the average speed of gaseous molecules is

  1. A

    3RT/M

  2. B

    2RT/M

  3. C

    8RT/πM

  4. D

    8kBT/πM

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    Solution:

    The expression of the average speed of gaseous molecules is 8RT/πM

    Where,

    m is the molar mass of the substance, expressed in kilograms

    T is the temperature

    R is the universal gas constant equal 8.3144598 × 10-2 L.bar.K-1.mol-1

    π Is constant equal to 3.14

    As the name implies, average speed is the sum of the speeds of gas molecules.

    Hence the correct option is C

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