6.02 x 10^21' molecules of urea are pres...

6.02 x 10^21' molecules of urea are present in 100 'mL' of its solution. "The concentration of urea solution is -

A

`10^(-3)` M

B

`10^(-1)` M

C

`2xx10^(-2)` M

D

`10^(-2)` M

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