The number of molecules in 1 ml of water is(

3.3 \times 10^{22}

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6.02 \times 10^{23}

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Solution

The correct option is A $3.3 \times 10^{22}$
Mass of 1 ml of water =1 gram
18 g of water =1 mole = $6.02 \times 10^{23}$ molecules
So, number of molecules in 1g of water
$\frac{6.02 \times 10^{23}}{18} = 3.3 \times 10^{22}$

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