A liquid medication is diluted from 500 mg in a 250 mL solution. What is the concentration in mg/mL?

To find the concentration of the liquid medication in mg/mL, you first need to understand how concentration is calculated. Concentration is defined as the amount of solute (in this case, the medication) divided by the volume of the solvent (the solution it is in).

Here, the amount of the medication is 500 mg, and it is dissolved in 250 mL of solution. To calculate the concentration, you can use the formula:

Concentration (mg/mL) = Amount of medication (mg) / Volume of solution (mL)

Plugging in the values:

Concentration = 500 mg / 250 mL = 2 mg/mL

This indicates that there are 2 milligrams of medication in each milliliter of the solution. The correct answer, therefore, is 2 mg/mL, confirming the solution's effective concentration based on the provided data.