The average distance that a molecule travels before colliding with another molecule is called the mean free path and is given by 1 where d is the diameter of the molecule and N, is the number of molecules per unit volume. The number of collisions that a molecule makes with other molecules per unit time, or collision frequency f, is given by f = avg (a) Determine the mean free path (in m) of hydrogen molecules in a tank that has a volume of 12.5 L, a gauge pressure of 110 atm, and a temperature of 20.0°C. The average diameter of hydrogen molecules is 0.740 x 10-10 m. 1.49E-8 m (b) Determine the average time interval (in s) between molecular collisions for a molecule of hydrogen gas. 0.52

The average distance that a molecule travels before colliding with another molecule is called the mean free path and is given by 1 where d is the diameter of the molecule and N, is the number of molecules per unit volume. The number of collisions that a molecule makes with other molecules per unit time, or collision frequency f, is given by f = avg (a) Determine the mean free path (in m) of hydrogen molecules in a tank that has a volume of 12.5 L, a gauge pressure of 110 atm, and a temperature of 20.0°C. The average diameter of hydrogen molecules is 0.740 x 10-10 m. 1.49E-8 m (b) Determine the average time interval (in s) between molecular collisions for a molecule of hydrogen gas. 0.52