Determine the heat of vaporization (in J/g) of a substance if 52,500 J of energy will boil away 30.0g of the substance,

a patient chooses to not take a beneficial medical treatment.

explanation:

if you're asking what comes out, it's steam.

the answer is barium and copper bromide

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.