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Homework Help: De Broglie and atoms

  1. Mar 13, 2010 #1
    1. The problem statement, all variables and given/known data
    The atoms in a gas can be treated as classical particles if their de Broglie wavelength is much smaller than the average seperation between the particles. Compare the average de Broglie wavelength and the average seperation between atoms in a container of (monoatomic) helium gas at 1 atm and at 20 degrees C. At what temperature or pressure would you expect quantum effects to be important?

    2. Relevant equations

    3. The attempt at a solution
    I have a small idea of what it is asking, but am unsure how to tackle it.
    anyhelp would be greatly appreciated.

  2. jcsd
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