A chemical reaction occurs inside a cylinder with a movable

Last updated: 7/9/2022

A chemical reaction occurs inside a cylinder with a movable piston at constant pressure of 0.972 atm. The chemical reaction releases 431.6 J of heat to the surroundings. Before the reaction occurs the volume of the cylinder is 3.38 L. During the reaction the cylinder is forced down to a final volume of 0.94 L. Calculate the change in internal energy for this process (in joules).