## Density is converted to concentration formula

Density and concentration are two different physical quantities. Density refers to the ratio of the mass of an object to its volume, while concentration refers to the mass or number of moles of the solute per unit of solvent. If you want to convert between the two, you need to consider the physical and chemical properties of the solvent and solute, and choose the corresponding conversion formula according to the actual situation.

For liquid solutions, common units of concentration are mass concentration (the ratio of the mass of the solute to the mass of the solvent) and molarity (the ratio of the number of moles of the solute to the volume of the solvent). If you know the density of a liquid solution, you can use the following formula to convert between density and concentration:

Mass concentration C (g/mL) = mass m (g)/volume V (mL) = density ρ (g/mL)

Molar concentration C (mol/L) = molar number n (mol)/volume V (L) = density ρ (g/mL)/relative molecular weight M

Density is converted to concentration formula

Among them, density ρ is the density of liquid solution, can be obtained by experimental measurement; The relative molecular mass M is the relative molecular or molar mass of the solute, which can be found in chemical equations or related literature.

We remind you that the density and the conversion formula of different substances may be different, so you need to choose the appropriate conversion formula according to the actual situation. In addition, when converting between density and concentration, it is also necessary to pay attention to the conversion of units and the precision of the decimal point to avoid unnecessary errors.