The number of water molecules is maximum in

Options

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

Answer

D

Explanation

Key Concept Mole is the biggest unit to measure number of molecules/ atoms/ ions.
`:'` mole of water contains molecules `=02xx10^(23)`
`:.` moles of water contain molecules
Now , 1 mole of water =18 g of water
Hence , number of molecules in 18 g of water
`=6.02xx10^(23)`
and 1.8 g of water contains `=6.02xx10^(22)` molecules