Question

question 6 (5 points)
a physician orders 5 ml of epinephrine 1% added to 45 ml of sterile water to prepare 50 ml of solution.
what is the weight in milligrams of the epinephrine that has been added?

Explanation:

Step1: Recall the definition of percentage concentration

For a 1% solution, it means 1 gram of solute (epinephrine) per 100 mL of solution, or equivalently 1000 milligrams per 100 mL (since 1 gram = 1000 milligrams).

Step2: Calculate the amount of epinephrine in 5 mL of 1% solution

First, find the concentration in mg/mL. A 1% solution is $\frac{1000\space mg}{100\space mL} = 10\space mg/mL$.
Now, for 5 mL of this solution, the amount of epinephrine is $10\space mg/mL\times5\space mL = 50\space mg$.

Answer:

50