How is Hess's law a consequence of conservation of energy? Chemistry Thermochemistry Hess' Law 1 Answer Ernest Z. Feb 4, 2017 Read the answer here. Answer link Related questions How is Hess's law applied in calculating enthalpy? How do you compute Hess's law calculations? How do you draw a Hess's law diagram? What does Hess's law say about the enthalpy of a reaction? Why isn't Hess's law helpful to calculate the heat of reaction involved in converting a diamond... Why is Hess' law useful to calculate enthalpies? What is the importance of Hess's law to do thermodynamic calculations? What is the equation for Hess's law? What is Hess's law of heat summation? Why is enthalpy of mixing zero? See all questions in Hess' Law Impact of this question 2300 views around the world You can reuse this answer Creative Commons License