1. Consider the expression
Based on your intuition or knowledge, predict the dependence of the
thermal conductivity coefficient on pressure?
increases with p
(B) decreases with p
(C) is independent of p

2. Consider the expression
Based on your intuition or knowledge, predict the dependence of the
thermal conductivity coefficient on pressure?
increases with p
(B) decreases with p
(C) is independent of p
Reason: effects of increased number of molecules contributing to heat
transport ( p) and shorter mean free path (  1/p) cancel each other.
Exception: If p  0 and  > container dimensions (more collisions with the walls than with other molecules,   p