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6.02 × 10^20 molecules of urea are present in 100ml solution the concentration of urea is |
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Answer» 6.02×10^20 /6.02×10^23= no. of moles present in 100 ML solution=10^-3. 1 molar concentration means 1 mole of SOLUTE in 1 litre solution . hence in100 ml if 10^-3 moles are present then in 1litre solution 10^-2 moles are present so concentration of urea in solution is 0.01 M . |
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