Question

The density of a solution prepared by dissolving 120 grams of urea in thousand gram of water is 1.15 gram per ml the molarity of the solution

Answer 1

ch4n2o = urea =molar mass= 60

molarity= density in litr / molar mass

[M] = 1.15 *1000/ 60

= 1150/60

= 19.60 mol/litr