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To prepare 480 mL of 80% alcohol solution, you would need to mix ________ mL of 91% alcohol together with ________ mL of 70% alcohol

A) 250; 230 B) 400; 80 C) 40; 800 D) 253; 227

How many mL of active ingredient must be added to distilled water to produce 1.5L of a 1.5% solution (v/v)?

A) 2.25 mL B) 22.5 mL C) 150 mL D) 225 mL