Question

laws of constant composition​

Answer 1

${ \huge\fbox \pink {A}\fbox \blue {N} \fbox \purple {S} \fbox \green{W} \fbox \red {E} \fbox \orange {R}}$

In chemistry, the law of definite proportion, sometimes called Proust's law, or law of constant composition states that a given chemical compound always contains its component elements in fixed ratio (by mass) and does not depend on its source and method of preparation.

Answer 2

Explanation:

French chemist Joseph Proust proposed the law of definite composition or proportions based on his experiments conducted between 1798 and 1804 on the elemental composition of water and copper carbonate.