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1. You have a bottle with 1 liter of 90% ethanol. How do you make 250 mL of a solution of 50% ethanol?
2. You have a 1 M stock solution of sodium chloride. How do you make 100 mL of a 0.5 M solution of sodium chloride?
3. How many moles of sucrose are in 10 microliters of
a 1 M solution of sucrose?
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