A: Calculate ΔE, if q = 0.769 kJ and w = -840 J.
B: Calculate ΔE, if a system releases 66.4 kJ of heat to its surroundings while the surroundings do 41.0 kJ of work on the system.
C: Calculate ΔE, if the system absorbs 7.29 kJ of heat from the surroundings and no work is done.