1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Specific heat capacity for a monocromatic gas

  1. Aug 11, 2008 #1
    is there another way of considering the specific heat capaciaty of a material (many gas) other than with respect to the number of degrees of freedom with gives a constant out put for all monocrmatic gases for all temperature and pressure.

    For a monocromatic gas c=(3/2)*n*R*m

    where m = mass of particle
    n = number of moles
    R = gas constant

    Any pointers in the right direction would be much appreciated.

    Thank you.
  2. jcsd
  3. Aug 11, 2008 #2
    Are you looking for just a microscopic representation or macroscopic? There are several ways of modeling a substance's specific heat that does vary with temperature and state. Unfortunately I don't know the science behind this (Im just an engineer) for the microscopic point of view only the macro.
  4. Aug 11, 2008 #3


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    See Einstein and Debye plus heat capacity.
  5. Aug 11, 2008 #4
    The heat capacity is only a constant value after and beyond reaching a certain temperature. At low temperatures, the value of the heat capacity rapidly drops off towards zero due to quantum effects. As someone mentioned see the Einstein/Debye explanation for more.
  6. Aug 18, 2008 #5
    can anyone recommend the best place to llok the einstein debye explanation & formulas up please?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook