A. You have a stock solution of 15.6 M NH3. How many milliliters of this solution should you dilute to make 1350 mL of 0.220 M NH3? Express your answer using three significant figures. B. If you take a 10.0-mL portion of the stock solution and dilute it to a total volume of 0.550 L, what will be the concentration of the final solution? Express your answer using three significant figures
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