1. The problem statement, all variables and given/known data Estimate the precise value for the specific heat of a nitrogen molecule at T=13.6K 2. Relevant equations I'm pretty sure the correct equation is: Cp = (7/2)*R + R((hv)/(kT))2 *((e(hv/kT))/(e(hv/kT)-1)2 So R=8.314 J K-1mol-1 T=13.6K h=6.626*10-34m2kg s-1 k=2pi/λ v= ? 3. The attempt at a solution Well, I know that diatomic molecules oscillate at a single characteristic frequency,v, but I'm not sure how to find what frequency that is and without it I can't finish the equation. I figure if I had the frequency, I could find λ or vice versa but I need both to finish the problem. Or am I approaching this in too straightforward a manner? Any help or confirmation that I'm at least headed in the right direction would be appreciated.