Question

The volume of water molecules present in a drop of water ( volume 0.0018ml) at room temperature is ???

Answer 1

The density of water is 1g/cm3 Volume of a drop of water =0.0018ml Mass of water drop=0.0018g Moles of water=0.0001 No of water molecules in 1 drop =0.0001×6.022×10^23 =6.022×10^19 water molecules.