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Grade: 12
        
Ice crystallises in a hexagonal lattice having volume of the unit cell as 132*10-24 cm3.If density of ice is 0.92 g cm-3 at a given temperature , then the number of H2O molecules per unit cell is
3 months ago

Answers : (2)

Vikas TU
10366 Points
							
Dear student
We have 
V=132×10^-24 
d= 0.92 
Molecular mass of water =18
Note that here molecular mass is of water molecule 
Using d=z×m÷V×6.02×10^23
Ans is 4 molecule 
Here z is molecules of water because we take m as molecular mass of water.
Good Luck 
3 months ago
TEJA KRISHNA
41 Points
							
 
Dear student
We have 
V=132×10^-24 
d= 0.92 
Molecular mass of water =18
Note that here molecular mass is of water molecule 
Using d=z×m÷V×6.02×10^23
Ans is 4 molecule 
Here z is molecules of water because we take m as molecular mass of water.
Good Luck 
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one month ago
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