The experimentally measured value for cv/R for methane, CH4, at 300. K is 3.2553. Use the Maxwell-Boltzmann formulae for nonlinear polyatomic gases to calculate the value of cv/R for methane, and then compute the percent error in your result.
The characteristic vibrational temperatures of methane are Θv1 = Θv2 = Θv3 = 1879 K,Θv4 = Θv5 = 2207 K,Θv6 = 4197 K, and Θv7 = Θv8 = Θv9 = 4344 K: