Which statements correctly describe chemical reactions? Select all that apply.

A. If the reactants include 5 atoms of Fe, then the products must include 5 atoms of Fe.

B. If the reactants include 3 molecules of CO, then the products must include 3 molecules of CO

C. If the reactants include an aluminum atom, then the products must include an aluminum atom.

D. If the reactants include water, then the products must include water.

E. If there are a total of 15 atoms in the reactants, there must be a total of 15 atoms in the products.

F. If there are a total of 6 molecules in the reactants, there must be a total of 6 molecules in the products.

The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.