C_(s) + 2S_(g) → CS_2(g)

ΔH = +89 kJ mol^-1

The chemical equation above implies that

• A each of carbon and sulphur has 89 kJ of energy
• B both carbon and sulphur contribute 89 kJ of energy
• C 89 kJ of energy is released
• D 89 kJ of energy is absorbed