Which of the following are true concerning balanced chemical equations? There may be more then one true statement. A. The number of molecules is conserved.
B. The coefficients tell you how much of each substance you have.
C. Atoms are nether created more destroyed.
D. The sum of the coefficients indicates the mass ratios of the substance used.
E. The sum of the coefficients on the reactant side equal the same of the coefficients on the product side.

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.