why was the precipitate rinsed in step 7? what soluble impurities could have been on the filter paper along with the precipitate? how would the calculated results vary if the precipitate had not been completely dry? explain your answer

The equation below shows a chemical reaction. a + b + heat —> c + d according to the law of conservation of energy, which statement is true? a. the reactants absorb heat because they have less energy than the products. b. the products release heat because they have more energy than the reactants. c. the reactants generate heat because they have more energy than the products. d. the products require heat to form because they have less energy than the reactants.