The number of water molecules is maximum in

Options

A. 18 gram of water
B. 18 moles of water
C. 18 moles of water
D. 1.8 gram of water

Answer

B

Explanation

18 g `H_(2)O` is 1 mol `H_(2)O`
`therefore` no. of `H_(2)O` molecules are `6.02xx10^(23)`
18 mol `H_(2)O` has `18xx16.02xx10^(23)` molecules
of `H_(2)O`
1.8 g `H_(2)O` has 0.1 mol `H_(2)O`
`therefore` no. of molecules `=0.1xx6.02xx10^(23)`
`=6.02xx10^(22)`