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Homework Help: One-Dimensional distribution of Molecular Velocity Questioin

  1. Sep 13, 2012 #1
    1. The problem statement, all variables and given/known data[/b]

    Calculate the function for N2 at 300k

    d(vx)= (m/2pikT)^1/2 exp(-(mv^2/2kT)

    I have to be able to use this equation for varying velocity from -1500 m/s to 1500 m/s

    3. The attempt at a solution

    Boltzmann constant = 1.3806503 × 10-23 m2 kg s-2 K-1
    N2 mass= 0.0280 kg

    So im plugging these 2 values in the equation, but i keep getting 0 when i do the exp(mv^2/2kt part). e to the power of such a high number gives me 0 and that high number comes from my denominator being such as small value, so Im no sure what to do.

    I have uploaded question formula picture incase its not clear.

    Attached Files:

  2. jcsd
  3. Sep 13, 2012 #2
    The mass you use for N2 is incorrect. It should be the mass of one molecule, not of one mole.
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