Q2. Statistical Thermodynamics. Answer all parts. A certain system is composed of 1 mole of identical, non-interacting, indistinguishable molecules. Each molecule has available to it only three energy levels, whose energies and degeneracies are: 1 = 0, g1 = 1; Ez/k = 300 K, 92 = 2; e/k = 900 K, g3 = 4 where k is the Boltzmann constant. Calculate the molecular partition function, q, at 300 K. [25 marks] Calculate the average number of molecules in each level at 300 K. [25 marks