3% solution in a 1.8 mL cartridge: how many mg?

Prepare for the Dental Hygiene Local Anesthesia Exam. Enhance your skills with multiple-choice quizzes, helpful tips, and clear explanations. Ace your test with confidence!

Multiple Choice

3% solution in a 1.8 mL cartridge: how many mg?

Explanation:
3% means 3 g of solute in 100 mL of solution. That’s 0.03 g per 1 mL, which is 30 mg per mL. Multiply by the cartridge volume: 30 mg/mL × 1.8 mL = 54 mg. So the 1.8 mL cartridge of a 3% solution contains 54 mg of drug.

3% means 3 g of solute in 100 mL of solution. That’s 0.03 g per 1 mL, which is 30 mg per mL. Multiply by the cartridge volume: 30 mg/mL × 1.8 mL = 54 mg. So the 1.8 mL cartridge of a 3% solution contains 54 mg of drug.

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