Q. In which case is the number of molecules of water maximum ?
A) 0.00224 L of water vapours at 1 atm and 273 K
B) 0.18 g of water
C) 18 mL of water
D) $10^{-3}$ mol of water
Explanation
[Solution] 18 mL of water = 18 g = 1 mol; the others are $10^{-4}$, $10^{-2}$ and $10^{-3}$ mol. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.