Question

An enclosed gas exerts a pressure P on the walls of the container. this pressure is directly proportional to the temperature T of the gas. if the pressure is 7 lb per inch squared when the temp is 420°F, find the constant of variation.

a. 1/49
b. 49
c. 1/60
d. 60​

Answer 1

d. 60

Explanation:

According to Gay Lussac's Law

P1/T1=P2/T2 where

P1= Pressure at the start, T1 = initial Temperature

, P2= Final Pressure, T2 =Final Temperature

T1=P1*T2/P2= 7*420/49=60