(a) Show that, if the kinetic energy of a particle with mass m, momentum p is E = p2/2m, the single particle partition function can be written Z, = V/23, where 1 = /h? /2nmkgT is the thermal wavelength. The canonical partition function for the ideal gas will then be %3D %3D VN ZN N!23N • (b) Use Stirling's approximation to show that in the thermodynamic limit the Helmholtz free energy of an ideal gas is V A = -NkgT In N23
(a) Show that, if the kinetic energy of a particle with mass m, momentum p is E = p2/2m, the single particle partition function can be written Z, = V/23, where 1 = /h? /2nmkgT is the thermal wavelength. The canonical partition function for the ideal gas will then be %3D %3D VN ZN N!23N • (b) Use Stirling's approximation to show that in the thermodynamic limit the Helmholtz free energy of an ideal gas is V A = -NkgT In N23
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