Problem 2.110

A horizontal tube with closed ends is rotated with a constant angular velocity $\omega$ about a vertical axis passing through one of its ends. The tube contains carbon dioxide at a temperature $T$ $=300 \mathrm{~K}$. The length of the tube is $l=100 \mathrm{~cm} .$ Find the value $\omega$ at which the ratio of molecular concentrations at the opposite ends of the tube is equal to $\eta=2.0$.