# What is the weight per volume method to calculate concentration?

##### 1 Answer

A **weight/volume percent concentration** (

As an example, a **5%** **5 g** of **100 mL** of solution. A **25%** **25 g** of **100 mL** of solution, and so on.

Weight/volume percent concentrations are characteristic when solids are dissolved in liquids and are often used because volumes are easier to measure than weights.

Another important reason for using such percent concentrations is the fact that dilute solutions have a density that's generally close to **1 g/mL**, which makes the volume of the solution expressed in mL nearly numerically equal to the mass of the solution expressed in grams.

As a conclusion, in order to calculate a