Describe the law of definite proportion? Class 9
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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 and does not depend on its source and method of preparation .
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= law of definite proportion states that in a given compound elements are combined in a fixed ratio by mass.
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= The law states that in a chemical substances the elements are always present in a definite proportion by mass. It is also termed as law of definite proportion.
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