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Irrespective of the source, pure sample of water always yeilds 88.89% mass of oxygen and 11.11% mass of hydrogen. This is explained by the law of

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Irrespective of the source, pure sample of water always yeilds 88.89% mass of oxygen and 11.11% mass of hydrogen. This is explained by the law of
A. conservation of mass
B. constant composition
C. multiple proportions
D. constant volume
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Correct Answer - B
`H_(2)O` contains H and O in fixed ratio by mass. If illustrates law of constant composition
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