A solution is prepared by dissolving 45g of sugar in 180g of water. Calculate the mass percentage of solute.

A solution is prepared by dissolving 30g of urea in 120g of water .Calculate the molality of the solution . ( Molar mass of urea : 60)

Calculate the boiling point of a solution which is prepared by dissolving 68.4g of solute B in one kilogram of water . (Molar mass of solute B is 342 g mol^(-1) T_b=373.1 K and K_b (water ) = 0.52 K kg mol ^(-1)

A solution is prepared by dissolving 2.0 g of glucose and 4.0 g urea in 100 g of water at 298 K . Calculate the vapour pressure of the solution ,If the vapour pressure of pure water is 23.756 torr. (Molecular mass of urea = 60 and glucose = 180g mol^(-1) )

A solution is obtained by mixing 300 g of 25% solution and 400 g of 40% solution by mass. Calculate the mass percentage of the resulting solution.

A solution contains 50 g of comon salt in 200 g of water. Calculate the concentration in terms of mass by mass percentage of the solution?