C_v =3(8.3144598 \quad J \quad mol^{-1} \quad K^{-1}) \Big(\; {(6.62606957 x 10^{ -34 } \quad J \quad s^{-1})(85400000000000 \quad s^{-1}) \over (1.38064852 x 10^{ -23 } \quad J \quad K^{1})(500 \quad K)} \Big)^2 { e^{(6.62606957 x 10^{ -34 } \quad J \quad s^{-1})(85400000000000 \quad s^{-1}) \over (1.38064852 x 10^{ -23 } \quad J \quad K^{-1})(500 \quad K)} \over ( e^{(6.62606957 x 10^{ -34 } \quad J \quad s^{-1})(85400000000000 \quad s^{-1}) \over (1.38064852 x 10^{ -23 } \quad J \quad K^{-1})} -1)^2} |