no detectable change in the total mass occurs during a chemical reaction the law was proposed by antoine lavoisier

### Law of Conservation of Mass

## Step1: Understanding the Statement### The statement mentions that there is no detectable change in the total mass during a chemical reaction. This implies that the total mass of the reactants is equal to the total mass of the products.## Step2: Relating to the Law### This observation is consistent with a well-known scientific law. This law states that mass cannot be created or destroyed in a chemical reaction. The total mass of the reactants equals the total mass of the products.## Step3: Identifying the Law### This law was proposed by Antoine Lavoisier, a French chemist. Therefore, the law being referred to in the statement is the Law of Conservation of Mass.