In one ml. 20% solution contains 0.244 g. Solution of the substance what is the density of the solution?

Given:

V = 1ml

w = 20%

m = 0.244 g

Solution :

Let’s find the mass of the substance in the solution.

The mass fraction of a substance is calculated by the formula:

W = m (substance): m (solution) × 100%,

hence (m (solution) = m (substance): w) × 100%.

m (solution) = (0.244 g: 20%) × 100% = 1.22 g.

V = m: p.

p = m: V.

p = 1.22 g: 1 ml = 1.22 g / ml.

Answer: 1.22 g / ml.