(a) Determine the number of impacts made by gas molecules on a unit area of the wall in a unit time for which the angle of incidence lies between θ and θ+dθ.
(b) Determine the number of impacts made by gas molecules on a unit area of the wall in a unit time for which the speed of the molecules lies between u and u+du.
(c) A molecule AB dissociates if it hits the surface of a solid catalyst with a translational energy greater than 10−19 J. Show that the rate of the dissociative reaction AB→A+B is more than doubled by raising the temperature of the gas from 300 K to 310 K.