12. State law of constant proportion.
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the law of definite proportion 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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Explanation:
Law Of Constant Proportion :
According to the Law Of Constant
Proportion a chemical compound always
contains some elements combined
together in a same proportion by mass.
It does not matter from where it has
taken.
For example water always contains Hydrogen (H) and Oxygen (O) in the ratio of 1:8. It does not matter that it is river's water or sea water.
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