Propose a chemical equation where this substance reacts with water to form an acid (Hint: There are two reactants and only one product. The chemical formulas for acids must start with at least one
hydrogen. You may want to use the list of polyatomic ions and your periodic table to help you.)

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter  

answer: mole of the gas

answer: mole of the gasexplanation: