The bulk moduli deduced from the latter are equal to isothermal values for monatomic and diatomic gases, but not for polyatomic gases. The amplitude, below which "isothermal" oscillations occur, increases with the volume of gas. Results for bulk moduli and ratio of specific heats are presented ...
• The heat capacity ratio ( γ ) for an ideal gas can be related to the degrees of freedom ( f ) of a molecule by: • Thus we observe that for a monatomic gas, with three degrees of freedom: while for a diatomic gas, with five degrees of freedom (at room temperature): ...
Heat capacity ratio Heat Capacity Ratio for various gases[1][2] Temp. Gas γ Temp. Gas γ Temp. Gas γ –181°C H2 1.597 200°C Dry