Question

an enclosed gas exerts a pressure p on the walls of a container this pressure is directly proportional to the temperature T of the gas if the pressure is seven LB per square inch when the temperature is 420°F find the constant of variation

Answer 1

You need to use Gay-Lussac's law which states that pressure is directly proportional to the temperature of a gas when volume is kept constant.

To find the constant of variation:

P/T = k

You are given the pressure and the temperature. Divide them to find the constant of variation.