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Chemistry

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Consider the following: CH4, SiH3Cl, Ar, and CH2F2.
(a) Which one will diffuse the fastest?
(b) What is the rms speed (m/s) of the slowest-moving atom or molecule at 25°C?

  • Chemistry - ,

    a)
    The fastest diffuser is the loest molar mass substance.

    b)
    urms = sqrt(3RT/M)
    M is molar mass. R is 8.314. T in kelvin.

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