Which one of the following represents 180g of water?

Options

A. 5 moles of water
B. 90 moles of water
C. `(6.022xx10^(23))/180` Molecules of water
D. `6.022xx10^(24)` Molecules of water

Answer

D

Explanation

No. of moles of water present in 180 g
=Mass of water / Molar mass of water
180g/18g `"mol"^(-1)`=10 moles
One mole of water contains
`6.022xx10^(23)` water molecules
10 moles of water contains=`6.022xx10^(23)xx10=6.022xx10^(24)` water molecules