Question

(a) State law of constant compositon​

Answer 1

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

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Answer 2

Explanation:

The law of constant composition says that, in any particular chemical compound, all samples of that compound will be made up of the same elements in the same proportion or ratio. For example, any water molecule is always made up of two hydrogen atoms and one oxygen atom in a 2:1 ratio.♎♎♎♎