. Name the scientist who gave

Best Answer

Explanation:

(a) Law of conservation of mass:

• It was given by Antoine Lavoisier.
• It states that in a chemical reaction mass of reactant will be equal to the mass product.

(b) Law of constant proportions:

• It was given by Joseph Proust.
• It states that elements will combine to form a compound in a fixed ratio of their mass.

Final Answer:

Hence (a) Law of conservation of mass was given by  Antoine Lavoisier.

 (b) Law of constant proportions was given by Joseph Proust.