6.02*10power20 molecules of urea are present in 100ml of solution.let me know the ans?

Answers (1)

Moles of urea = Number of molecules/Avogadro number
=> 6.02x10^20/6.02x10^23
=> 10^-3 moles

Now, concentration or molarity = Number of moles/ volume in litre
=> M = (10^-3/100)*1000
=> M = 10^-2 M

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