If a solution contains 300 mg in 1 L, what is the concentration in mg/mL?

To determine the concentration of the solution in mg/mL, you need to convert the total milligrams in the solution to a per-milliliter basis. Since there are 1,000 milliliters in 1 liter, the calculation would involve dividing the total amount of the substance (300 mg) by the volume in milliliters (1,000 mL).

The calculation is as follows:

Concentration (mg/mL) = Total amount in mg / Volume in mL

So here, it would be:

Concentration (mg/mL) = 300 mg / 1,000 mL = 0.3 mg/mL

This shows that there are 0.3 milligrams of the substance in every milliliter of the solution. This understanding of unit conversion is essential in nursing practice, as it enables the accurate administration of medications where concentrations are often provided in different units. Understanding how to manipulate these units is crucial for providing safe and effective patient care.