Please please please help

4. (15 points total). a) (5 points) For a system at a temperature of 300 K, where 15% of the molecules have energy Ei,

if the partition function Q = 1.8, what is the value of Ei in units of kT?

b) (10 points) Consider a system that is isolated from the rest of the universe and consists of two subsystems, A and B. If A and B are placed in thermal contact, which of the following microstates of the combined A+B system is inconsistent with the other two? Explain why via explicit calculation. (Hint: consider conservation laws as discussed in lecture).

microstate 1 system A system B ooo microstate 2 system A system B co- microstate 3 system A system B X000000 energy ONWO energy ON 01 energy LON-O - ooooo