What is the heat of reaction when hydrogen and oxygen combine to form water

the result is an explosive release of energy and the production of water.

Explanation:

Hydrogen molecules violently react with oxygen when the existing molecular bonds break and new bonds are formed between oxygen and hydrogen atoms. As the products of the reaction are at a lower energy level than the reactants

with this one i know the answer in craters one reason i looked it up and i learned about it there is my evidence

answer; 4 electrons;