Fast will mark brainliest which element(s) is/are not balanced in this equation? pb(no3)2 + 2kcl -> pbcl2 + kno3 a.) k b.) k, n, and o c.) n amd o d.) pb, n, and o (even though you don't need the periodic table to figure this out, feel free to use it if you think it will you)

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.

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.