Calculate the amount of pure isopropanol needed to prepare 0.5 L of 90% isopropanol solution, using pure isopropanol liquid and water: ________.
Fill in the blank(s) with the appropriate word(s).
450 mL
0.5 L × 1,000 mL/1 L = 500 mL
x = 500 mL × 90 mL pure isopropanol/100 mL
x = 450 mL
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