Particle occupies a in a classical gas, the probability is negligible that more than one given single particle state. the mean occupation number of a single particle state s in which the particle has translational energy 8," is given by 3/2 h2 n |exp(-be,") v 2ttmkt (a) write down an and hence find its de broglie wavelength adb- expression for the momentum of a particle with translational energy [2 marks] (b) assuming that the mean translational kinetic energy of a molecule is kt , show that the condition for a classical gas is satisfied if adb < < l where l is the mean separation of the molecules. [6 marks] (c) why do you expect the condition adb < < l to correspond to the classical regime?