An ideal gaseous reaction (which is a hypothetical gaseous reaction that conforms to the laws governing gas behavior) occurs at a constant pressure of 45.0 atm and releases 58.8 kJ of heat. Before the reaction, the volume of the system was 8.20 L. After the reaction, the volume of the system was 3.00 L. Calculate the total internal energy change, AE, in kilojoules. Express your answer with the appropriate units. Value Units ?