Final answer:
To add 10 mEq of magnesium sulfate to an IV bag, 2.5 mL of magnesium sulfate 4 mEq/mL are needed.
Step-by-step explanation:
To find out how many mL of magnesium sulfate 4 mEq/mL are needed to add 10 mEq of magnesium sulfate to an IV bag, we can use the formula:
Volume = (Amount of Magnesium Sulfate needed) / (Concentration of Magnesium Sulfate)
Plugging in the values, we have:
Volume = 10 mEq / 4 mEq/mL = 2.5 mL
Therefore, the correct answer is option A) 2.5 mL.