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6.02 xx 10^(20) molecules of urea are pr...

`6.02 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 of urea taken `=(6.02 xx 10^(20))/(6.022 xx 10^(23)) = 10^(-3)`
`therefore` Molarity of solution `=10^(-3)/100 xx 1000 = 0.01 M`
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