Question

A solution is prepared by adding 2 gm of a substance a to 18 gm of water . calculate the mass % of solution.

Answer 1

MASS PERCENTAGE OF SOLUTE :
mass % = m of solute / m of the solution*100(m=mass)
therefore : mass % =
$2 \div (18 + 2) \times 100$
=10%
Similarly , you can find for solvent.

Answer 2

HEYA MATE HERE U GO.

Mass percent of A = Mass of A / Mass of solution × 100.

= 2g / 2g of A + 18 g of water × 100 = 2g/20g× 100 = 10%.