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6.022 xx 10^(20) molecules of urea are p...

`6.022 xx 10^(20)` molecules of urea are present in 100 mL of its solution. The concentration of urea solution is :

A

0.001 M

B

0.01 M

C

0.02 M

D

0.1 M

Text Solution

Verified by Experts

The correct Answer is:
B
No. of moles urea
`(6.022xx10^(20))/(6.022xx10^(23))=0.001` mol
Concentration of solution
`=((10^(-3)"mol"))/(("0.1 L"))xx10^(-2)"molL"^(-1)=0.01 M`.
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