Question

which of the following solution has same concentration that of 15 gram of Urea dissolved in hundred ml of solution​

Answer 1

1.689molkg

−1

molality =

molar mass of urea × mass of water in kg

mass of urea

molality =

60 g/mol× 0.150 kg

15.20 g

molality = 1.689 mol/kg

Hence, option A is correct.