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PTECH Pharmaceutics II (Industrial & Quality Control) QUESTION #5715
Question 1
A mixture that contains $0.5\% \text{ w/v}$ of a drug. How many milligrams are in $5 \text{ mL}$?
  • $2.5 \text{ mg}$
  • $25 \text{ mg}$✔️
  • $50 \text{ mg}$
  • $0.25 \text{ mg}$
Correct Answer Explanation
Calculation: $0.5\text{ g}$ in $100\text{ mL} \Rightarrow 500\text{ mg} / 100\text{ mL} = 5\text{ mg/mL}$. So, $5\text{ mL} \times 5\text{ mg/mL} = 25\text{ mg}$.