Which of the following is the correct conversion of 0.3 mg to micrograms (mcg)?

• A. 300 mcg
• B. 3 mcg
• C. 0.03 mcg
• D. 30 mcg

Answer: (A)

Verified step by step guidance

1. Understand the relationship between milligrams (mg) and micrograms (mcg). Specifically, 1 milligram (mg) is equal to 1000 micrograms (mcg).
2. Set up the conversion using the given value: 0.3 mg. To convert to micrograms, multiply by the conversion factor 1000 mcg/mg.
3. Write the conversion expression as: \$0.3 \text{ mg} \times \frac{1000 \text{ mcg}}{1 \text{ mg}}$.
4. Cancel the units of milligrams (mg) to leave the result in micrograms (mcg).
5. Perform the multiplication of the numerical values (without calculating the final number here) to find the equivalent amount in micrograms.