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QNEET-2018-Ch-850: NEET 2018 Chemistry - Class 11 NEET-2018-Ch-850 Solution: In which case is number of molecules of water maximum? 18 mL of …
In which case is number of molecules of water maximum? 18 mL of water 0.18 g of water 0.00224 L of water vapours at 1 atm and 273 K mol of water
Multiple Choice Options
- A 18 mL of water
- B 0.18 g of water
- C 0.00224 L of water vapours at 1 atm and 273 K
- D 10 �3 mol of water
Step-by-Step Verified Solution
(a) 18 mL water :
Since, density of H 2 O = 1 g/mL
Mass of water = V _ d = 18 _ 1 = 18 g
No. of molecules of H 2 O = 18 18 _ N A = 1 _ N A
(b) 0.18 g of water :
No. of molecules of H 2 O = 0.18 18 _ N A = 0.01 _ N A
(c) Volume of H 2 O(g) STP = 0.00224 L
No. of molecules of H 2 O = V 22.4 _ N A
= 0.00224 22.4 _ N A = 0.0001 _ N A
(d) No of Molecules of water = mole _ N A = 10 �3 N A