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Calculate the number of water molecul...

Calculate the number of water molecules present in one drop of water which weights 0.18 g.

Text Solution

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Mass of water = 0.18 g
Number of molecules
`=("Avogadro number "xx " given mass ")/( "Gram molecular mass ")`
`=(6.023xx10^(23) xx0.18 )/( 18)`
`=6.023 xx 10^(21) ` Molecules (or) `= 0.06023 xx 10 ^(23)`
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