A chemical equation is shown below. Hgs + O2 → HgO + 502
What are the coefficients that should be added to balance this equation? Use complete sentences to explain your
answer.
Explain how this chemical reaction demonstrates the conservation of mass.

Yes, it is a special case of enthalpy of neutralization.  

The enthalpy of neutralization (ΔHn) is the change in enthalpy that occurs when one equivalent of an acid and one equivalent of a base undergo a neutralization reaction to form water and a salt.

The standard enthalpy change of neutralization is the enthalpy change when solutions of an acid and an alkali react together under standard conditions to produce 1 mole of water.