How is the concentration for a liquid solution calculated?

To determine the concentration of a liquid solution, the correct calculation involves dividing the weight of the solute by the volume of the solution. Concentration is typically expressed in terms of a unit weight per unit volume, such as grams per milliliter (g/ml).

In this case, the concentration is defined as the weight of the solute (in grams) divided by the volume of the solution (in milliliters). This relationship allows you to understand how much of the solute is present within a specific volume of solution, which is essential for various applications in pharmacy, such as dosing and compounding.

While other options may reference different units or substances, they do not accurately represent the mathematical relationship required to determine concentration. The correct method, therefore, maintains the necessary specificity of units to arrive at a meaningful concentration measurement.