Question

Calculate the total no. of degrees of freedom possessed by the molecules in 1cm³ of H₂ gas at NTP.

Answer 1

No. of H₂ Molecules in 22.4 liters or 22400 cm³ at NTP = 6.02 x 10²³.

∴ No. of H₂ Molecules in 1 cm³ at NTP = (6.02 x 10²³)/22400 = 2.6875 x10¹⁹.

No. of degrees of freedom associated with each H₂ (a diatomic) molecule = 5

∴ Total no. of degree of freedom associated with 1cm³ gas

= 2.6875 x 10¹⁹ x 5 = 1.3475 x 10²⁰.