4. I have 650 mL of a 0.63 M solution. To what volume would I need to add water to this solution to make a new solution with a concentration of 0.25 M? 5. You have a 100 mL stock solution of 100 mg/mL ampicillin in deionized water. You want to make 30 mL of 25 mg/mL ampicillin in deionized water. How much ampicillin stock and how much deionized water are needed to make this?
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