Question

a solution 16g of urea in 120 g of the solution. what is its mass by mass percentage

Answer 1

The concentration of a solution in terms of mass by mass percentage is given as

mass by mass percentage = (mass of solute / mass of solution) × 100

Here mass of the solute = mass of urea = 16g (given)

mass of solution = mass of solute + mass of solvent = 120 g (given)

Therefore mass by mass percentage of solution = (16 / 120) × 100 = 13.33%

Thus the mass percentage of the solution is 13.33%.