To 150 g of 8% solution, 50 g of water was added. What is the mass fraction of the solute in the new solution?

1) Find the mass of the solute of the salt in its solution: 150 * 8/100 = 12g.
2) Find the mass of the solution after adding water. To do this, add the mass of the original solution with the mass of added water: 150 + 50 = 200g.
3) Calculate the volume of the resulting solution. To do this, divide the mass of this solution by its density: 200 * 1.045 = 209 ml.
Further calculation of the problem is impossible, since the specific substance of the solution is not indicated. It is necessary for calculating the molar mass and calculating the amount of a substance to find the molarity of a solution.