Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The number of water molecules present in 0.20 g sample of CuSO 4 .5H 2 O (Molar mass = 249.7) is
Text Solution
Verified by ExpertsThe correct answer is:
B
1.Calculate the molar mass of 
:
Molar mass 
Molar mass 
2. Calculate the number of moles of 
in 
:
Number of moles 
3. Determine the number of moles of water molecules 
:
Since each formula unit of 
contains 5 water molecules:
Moles of water molecules 
4. Calculate the number of water molecules:
Number of molecules 
molecules 
Number of molecules 
molecules
Therefore, the number of water molecules present in the 
sample of 
is approximately 
.
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