Tobramycin 2 mL containing 80 mg/mL is ordered. The pharmacy has 160 mg/mL tobramycin in stock. How much concentrate will you need?
1 mL
2 mL
2 ½ mL
3 ½ mL
1 mL
Rationale: If 2 mL of tobramycin contains 80 mg/mL, and 160 mg/mL is in stock, only 1 mL is needed.
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