How many milliliters of full-strength Sustacal are needed to prepare 300 mL of a 3/4-strength Sustacal solution?
1. 225 mL
2. 450 mL
3. 900 mL
4. 950 mL
1
Global Rationale: 300 mL (sol) × 3 mL (solute)/4 mL (sol) = 225 mL (solute).
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