Question

A solution contains 20g of urea in 125g of solution. Calculate the mass percentage of the solution.

Answer 1

mass % = mass % of x / mass of solution * 100
20/20 + 145 *100
= 2000/145
=13.79

Answer 2

Mass = mass of x/Mass of solution
20/20+145×100= 2000/145=13.79