Question

el serum fisiologico se oreoara diluyendo 3g de sal en 330g de agua. Calcula la concentracion del serum, expressada en porcentage de masa.

Answer 1

Solute mass = 3 g
Solvent mass = 330 g
Mass solution = m solute + solvent solvent

1. Prepare the solution
  msolution = 3 g + 330 g = 333 g

2. % m / m = m solute / m solution X 100
% m / m = 3 g / 333 g x 100
% m / m = 0.900%