Final answer:
To administer a 5.0 mg dose of methylprednisolone from a solution that has a concentration of 10 mg/2 mL, 1 mL of the solution is required.
Step-by-step explanation:
The question asks us to calculate how many milliliters of methylprednisolone are required if a physician orders 5.0 mg, given the concentration is 10 mg/2 mL.
To find the number of milliliters needed for the matching 5.0 mg dose, we can set up a proportion using the fact that 10 mg is equivalent to 2 mL:
10 mg = 2 mL
5 mg = x mL
Cross multiplying, we find that:
(10 mg)(x mL) = (5 mg)(2 mL)
10x = 10
Dividing both sides of the equation by 10 gives us:
x = 1 mL
Therefore, 1 mL of the available methylprednisolone solution is required to administer a 5.0 mg dose.