You have a 6 M solution of stock A. You do the following serial dilutions: Add 1 ml of stock A to tube B. Add 9 ml H2O. Mix. Then take 1 ml from tube B and put it into tube C. Add 19 ml H2O. Mix. Then put 5 ml from tube C into tube D. Add 5 ml H2O. A. what is the final (cumulative) dilution of stock A (dilution factor)? B. What is the final concentration (include units) after all these dilutions?

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