Q30. State the law of constant proportions.
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In chemistry, the law of definite proportion, sometimes called Proust's law, or law of constantcomposition 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.
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Explanation:
The law of constant proportions states that chemical compounds are made up of elements that are present in a fixed ratio by mass. This implies that any pure sample of a compound, no matter the source, will always consist of the same elements that are present in the same ratio by mass
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