🤓 Based on our data, we think this question is relevant for Professor Chen's class at UTSA.
Which quantity or quantities must always be the same on both sides of a chemical equation?
I. the number of atoms of each kind
II. the number of molecules of each kind
III. The mass of the reactants is equal to the mass of the products.
A. I only
B. II only
C. III only
D. Both I and III
E. All of the above