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Thermal speed

  1. May 6, 2014 #1
    VTh= sqrt[(3RT)/M] where M is the molar mass

    How do we determine which R constant to use?
  2. jcsd
  3. May 6, 2014 #2
    What do you mean? Do you suppose there is more than one?
    Last edited: May 6, 2014
  4. May 6, 2014 #3

    Isn't the boltzman constant and the ideal gas constant?
  5. May 6, 2014 #4


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    Staff: Mentor

    Which constant has the proper units to fit into the equation?
  6. May 6, 2014 #5
    Who uses R for the Boltzmann constant?
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