A vertical cylinder with a movable piston contains 1.00 mol of a diatomic ideal gas. The volume of the gas is Vi, and its temperature is Ti. Then the cylinder is set on a stove and additional weights are piled onto the piston as it moves up, in such a way that the pressure is proportional to the volume and the final volume is 2Vi.
(a) What is the final temperature?
(b) How much energy is transferred to the gas by heat?