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

(A) Law of constant composition 

(B) Law of conservation of mass 

(C) Law of reciprocal proportions 

(D) Law of multiple proportions 

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A sample of pure carbon dioxide, irrespective of its source contains 27.27% carbon and 72.73% oxygen. The data supports Law of constant composition .

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