A gas mixture consists of 2.0 of oxygen and 4.0 of neon at temperature T. Neglecting all vibrational modes, calculate the total internal energy of the system. (Oxygen has two rotational modes.)
O2 has 5 degrees of freedom.
Therefore, energy per mole = (5/2)RT
∴ For 2 ***** of O2, energy = 5RT
Neon has 3 degrees of freedom
∴ Energy per mole = (3/2)RT
∴ For 4 mole of neon, energy = 4 x (3/2) RT = 6RT
∴ Total energy = 11RT.
