(a) What is the separation in energy between the lowest two energy levels for a container 20 cm on a side containing argon atoms? Assume, for simplicity, that the argon atoms are trapped in a one-dimensional well 20 cm wide. The molar mass of argon is 39.9 g/mol.
(b) At 300 K, to the nearest power of ten, what is the ratio of the thermal energy of the atoms to this energy separation?
(c) At what temperature does the thermal energy equal the energy separation?