Do you want to calculate or measure?
1. You can measure the density of the solution using a hydrometer
A hydrometer is a glass tube, the bottom of which is filled with shotgun or mercury during calibration to achieve the required mass. In the upper, narrow part is the scale, which is graduated in terms of the density of the solution or the concentration of the solute. The density of the solution is equal to the ratio of the mass of the areometer to the volume on which it sinks into the liquid. Accordingly, constant volume areometers and constant mass areometers are distinguished.
To measure the density of a liquid with a constant mass hydrometer, a dry and clean hydrometer is placed in a vessel with this liquid so that it floats freely in it. The density values are read on the scale of the hydrometer, on the lower edge of the meniscus.
To measure a constant volume hydrometer change its mass, reaching its immersion to a certain mark. Density is determined by the mass of the load (for example, a weight) and the volume of the displaced fluid.
2. You can calculate the density of the finished solution knowing that the density of the substance [P] is the ratio of the mass [m] of the body to its volume [V]: P = m / V. To measure the volume, use a volumetric flask, not a cylinder.
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