Density of water at room tempearture is `1.0g cm^(-3)`. How many molecules are there in one drop of water if its volume is `0.1 cm^(3)`?

Answer

`3.34xx10^(21)` molecules

Explanation

Mass of one drop `"vol".xxd=0.1xx1=0.1g`
No. of moles `=(0.1)/(18)`: No. of molecuels `=6.02xx10^(23)xx(0.1)/(18)`.