Question

what is the concentration of a solution if it has 25g of salt dissolved in 400 ml of water?

Answer 1

Answer:

Solubility ≡ 62.5 ⋅ g ⋅ 100 ⋅ m L − 1

Explanation:  We want  Concentration = Mass of solute  100 mL volume of solvent .

We make the reasonable assumption that the volume of solution is equal to  40 ⋅ m L

Explanation:

Answer 2

Answer:

62,5 g/l

Explanation:

Concentration = m(NaCl) / V(H2O)

Firstly, we change ml to l, so 400 ml becomes 0,4 l.

Divide 25 by 0,4 and you get 62,5 g/l.