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26 May, 10:39

Which gas has molecules with the greatest average molecular speed at 25°c?

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  1. 26 May, 12:54
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    Answer: the options to the questions are

    a. 1.0 moles of N2

    b. 0.5 moles of New

    c. 0.2 moles of CO2

    d. 2 moles of He

    Answer D

    Explanation:

    The average molecular speed v of gas is given by = √ (8RT,/πM)

    From the equation it can be seen that substance with lowest molar mass has the highest velocity has He is the answer
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