Ordinary water contains one part of heavy water per 6000 parts by weight. The number of heavy water molecules present in a drop of water of volume 0.01mL is (density of water is 1g/mL)

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answer is 3.

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Detailed Solution

Volume of one drop of water = 0.01mlWeight of one drop of water = 0.01g (density 1g/cc)GMW of D2O = 20g20g of D2O containmolecules

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