What is the heat of reaction when hydrogen and oxygen combine to form water?
2h2(g) + o2(g) → 2h20(1)
(ah: h2o(l) = -285.8 kj/mol)

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.

fe 55.85 g/mol and h2o 18.02 g/mol.