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  • The number of molecules in  of water is closed to -Option: 1

The number of molecules in 1 ~c c of water is closed to -

Option: 1

6 \times 10^{23}


Option: 2

22.4 \times 10^{24}


Option: 3

\frac{10^{23}}{3}


Option: 4

10^{23}


Answers (1)

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Density of water is 1 \mathrm{~g}/cm^3 ,  ie 1 ~cm^3=1 \mathrm{~g} of water.
In 1 \mathrm{~g~mole}  or 18 \mathrm{~g} water there are total 6.02 \times 10^{23} molecules.

Hence, in 1 \mathrm{~g} of water (or 1 \mathrm{~cm}^3 of water) number of molecules should be
=\frac{6.20 \times 10^{23}}{18} \approx \frac{1}{3} \times 10^{23}

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Sayak

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