Question

The number of water molecules is maximum in :-

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

Answer 1

The correct option is B 18 moles of water

$\because$ 1 mol water $=6.02\times {10}^{23}$ molecules
$\therefore$ 18 mol water $=18\times 6.02\times {10}^{23}$ molecules
1.8 gram water = 0.1 mol
Hence, 18 mol water has the maximum number of molecules.