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Answer the following questions: Two sam...

Answer the following questions:
Two samples 'm' and 'n' of slaked lime were obtained form two different reactions. The details about their compostion are as follows:
'Sample m' mass: 7g
Mass of constituent oxygen: 2g
Mass of constituent calcium :5g
'sample n' mass: 1.4g
Mass of consittuent oxygen: 0.4
Mass of constituent calcium : 1.0g
Which law of chemical combination does this prove ? Explain.

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