Question

what is meant by law of definite proportion​

Answer 1

Answer:

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

Answer 2

Explanation:

This law states that two elements always combine in a definite proportion by mass to form a compound

... if excess of one of the reactants is added then also it reacts in the same proportion and extra remains unreacted...

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