4.5g of urea (molar mass = 60g "mol"^(-1)) are dissolved in water and solution is made to 100 ml in a volumetric flask. Calculate the molarity of solution.

4.5g of urea (molar mass = 60g "mol"^(-1)) are dissolved in water and

1.	4.5g of urea (molar mass = 60g "mol"^(-1)) are dissolved in water and solution is made to 100 ml in a volumetric flask. Calculate the molarity of solution.
Answer» SOLUTION :Mass of Urea = 4.5 G Moles of Urea `=("Mass ")/( "Molar Mass ")=(4.5g)/(60 g " MOL "^(-1))` `=0.075` mol Volume of Solution = 1000 ml =`(100)/(1000)L` `=0.1 L` Molarity of Solution =`(" Mass of solute in g")/("Volume of Solution in litres ")` `=(0.075)/(0.12) " mol " = 0.75`M