Question

order: ampicillin (principen) oral suspension: 250mg po q 8°
supply: principen oral suspension: 500mg/10 ml
how many mls will you give?

Explanation:

Step1: Determine the concentration ratio

The supply has a concentration of $\frac{500\text{ mg}}{10\text{ mL}} = 50\text{ mg/mL}$.

Step2: Calculate the volume

We need to give 250 mg. Using the formula $V=\frac{m}{C}$, where $m = 250\text{ mg}$ and $C = 50\text{ mg/mL}$. So $V=\frac{250\text{ mg}}{50\text{ mg/mL}} = 5\text{ mL}$.

Answer:

5 mL