Suppose you have 100.00 ml of a solution of a dye and transfer 2.00 ml of the solution to a 100.00ml volumetric flask.  After adding water to the 100.00 ml mark, you take 5.00 ml of that solution and again dilute to 100.00 ml.  If you find the dye concentration in the final diluted sample is 0.000158 M, what was the dye concentration in the original solution.

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter3: Chemical Reactions
Section3.11: Stoichiometry In Aqueous Solutions
Problem 3.28E: Sodium chloride is used in intravenous solutions for medical applications. The NaCl concentration in...
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Suppose you have 100.00 ml of a solution of a dye and transfer 2.00 ml of the solution to a 100.00ml volumetric flask.  After adding water to the 100.00 ml mark, you take 5.00 ml of that solution and again dilute to 100.00 ml.  If you find the dye concentration in the final diluted sample is 0.000158 M, what was the dye concentration in the original solution. 

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