Calculate the change in internal energy (δe) for a system that is giving off 25.0 kj of heat and is changing from 12.00 l to 6.00 l in volume at 1.50 atm pressure. (remember that 101.3 j = 1 l∙atm) a) +25.9 kj b) -16.0 kj c) -25.9 kj d) -24.1 kj e) 937 kj