Question

The mass of all substances present before a chemical change

A. is greater the mass of all substances remaining after the change
B. is less than the mass of all substances remaining after the change
C. equals the mass of all substances remaining after the change​

Answer 1

C. Equals the mass of all substances remaining after the change.

Step-by-step explanation:

Antoine Lavoisier's 1789 discovery in regards to the Law of Conservation of Mass states that no mass is created nor destroyed in a chemical reaction.