What is the total volume of a 4.5L saline solution created with a 15% solution of sodium chloride to obtain a 0.9% solution?

To determine the total volume of the saline solution created with a 15% sodium chloride solution to achieve a 0.9% solution, we start with the final desired volume. The question states that the typical volume of the saline solution is 4.5 liters.

In creating a saline solution, when you combine a concentrated solution with a diluent (often sterile water or another solvent), the total volume of the final solution will be equal to the original volume of the concentrated solution plus any additional diluent added.

In this specific scenario, we are targeting a 4.5-liter solution, which is indicative of the final total volume of the saline solution that is required. Therefore, the total volume you are looking for, which is the volume of the 0.9% saline solution, is indeed 4.5 liters.

Other options do not align with the requirement for the total volume of the final saline solution, which is specifically stated as 4.5 liters. Hence, the correct answer is that the total volume of the saline solution created is 4.5 liters.