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Q.

A sample of pure carbon dioxide, irrespective of its source contains 27.27% carbon and 72.73% oxygen. The data support ___?

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a

Law of constant composition

b

Law of conservation of mass

c

Law of reciprocal proportions

d

Law of multiple proportions

answer is A.

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Detailed Solution

Law of constant proportion states that chemical compound always contain its component elements  in fixed ratio and does not depends on its source and method of preparation.
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