The number of water molecules is maximum in

Options

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

Answer

B

Explanation

`"18 g of water "=(18)/(18)" mole = 1 mole "=6.022xx10^(23)" molecules"`
`"18 moles of water"=18xx6.022xx10^(23)" molecules"`
`"1.8 g of water "=(1.8)/(18)" mole = 0.1 mole"`
`=0.1xx6.022xx10^(23)=6.022xx10^(22)" molecules"`
Thus, 18 molecules of `H_(2)O` contain maximum number of molecules.