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!

Homework Help: Thermal Physics problem - please help

  1. Sep 27, 2011 #1
    1. The problem statement, all variables and given/known data

    Consider a CO2 molecule, which is linear and has vibrational modes with frequency
    corresponding to 2565 cm-1 (an asymmetric stretch), 1480 cm-1 (a symmetric stretch)
    526 cm-1 (bends). Sketch a curve showing how the constant volume heat capacity of CO2
    gas varies with temperature and mark the values of plateaus. (Recall: the spacing between
    rotational levels is smaller than the spacing between the vibrational levels).

    3. The attempt at a solution

    I think Z=[itex]\frac{1}{1-e^{-h\varpi/\tau}}[/itex] but after that I have problems with finding U so that I can find the heat capacity with: C[itex]_{v}[/itex]=[itex]\left(\frac{dU}{d\tau}\right)_{v}[/itex]
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted