A system releases 136 kJ of heat while 104 kJ of work is done on it. Calculate ΔE.
The energy change (ΔE) can be calculated using the first law of thermodynamics:
ΔE = Q - W
Where ΔE is the energy change, Q is the heat released (136 kJ) and W is the work done on the system (104 kJ).
ΔE = 136 kJ - 104 kJ
ΔE = 32 kJ
The energy change (ΔE) is 32 kJ.