Question

determine the mass by mass percentage concentration of a 100g salt solution wich contains 20g salt?

Answer 1

Given solute = 20gm, solution = 100g


Mass % = Mass of solute/mass of solution * 100

             = (20/100) * 100

             = 1/5 * 100

             = 20%


Hope this helps!

Answer 2

Mass percentage concentration = [Mass of solute / Mass of solution] × 100
= (20 / 100) × 100
= 20%

(m/m)% of given salt solution is 20%