Question

question 1
who determined that the sum of the masses of the reactants of a chemical reaction were equal to the sum of the mass of the product or products?

1. lavoisier
2. rutherford
3. thompson
4. dalton

Explanation:

Antoine - Laurent Lavoisier is known for the law of conservation of mass which states that the sum of the masses of the reactants in a chemical reaction is equal to the sum of the mass of the products.

Answer:

A. Lavoisier