Question

What is the amount of copper sulphate present in 550g of solution whose concentration is 20 by mass/mass%?

Answer 1

let the mass of CuSO₄ (solute)in the solution be y g
mass of solution =550g
as per condition
mass of solute (CuSO₄) /mass of solution×100=20
$\frac{y}{550} \times 100 = 20 \\ y = 110g$
mass of CuSO₄ in the solution is 110g