A solution contains 4.20 g of solute in 13.8 g of solvent. What is the mass percent of the solute in the solution?

Answer 1

Mass % = mass of solute / total mass of solution (x100%)

mass of solute = 4.20 g

total mass of solution = 4.20 g + 13.8 g = 18.0 g

mass % of solute = 4.20 g / 18.0 g (x100%) = 23.3%