the average molecular velocity of a gas in a certain container is
SECTION 3.7 The Chain Rule 301 77. The average molecular velocity v of a gas in a certain container is given by v(T ) = 29 â T m/s, where T is the temperature in kelvins. The temperature is related to the pressure (in atmospheres) by T = 200 P . Find dv dP Â± Â± Â± Â± P = 1 . 5 .