A solution contains 20g of solute in 180g of solvent. If the solvent is water, what is the concentration of the solution in terms of mass by mass percentage

Mass of Solution = Mass of Solute + Mass of Solvent → 20g + 180g

: Mass of Solution = 200g

Mass Percent = MassofSoluteMassofSolution∗100 $\frac{MassofSolute}{MassofSolution}\ast 100$

Mass percent = 20200∗100 $\frac{20}{200}\ast 100$

Mass percent = 10%