Question

The density of water is 1g/mL.What is the volume occupied by 1 molecules of water?

• A. $1.44\times {10}^{-23}$
• B. 1 mL
• C. 18 mL
• D. $2.98\times {10}^{-23}mL$

Answer 1

The correct option is D $2.98\times {10}^{-23}mL$

Mass of 1 molecule of water = 18 amu = $18\times 1.66\times {10}^{-24}g$

Volume of 1 molecule = $\frac{mass}{density}$

= $2.98\times {10}^{-23}mL$ {Option D}