From a 10-mL sample, a 1-mL aliquot was taken and diluted to 100mL.  From this, a 5-mL aliquot was taken and diluted to 20mL. The final 20mL was found to have a concentration of 0.004M analyte X. What is the concentration of analyte X in the 10-mL sample?

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
Publisher:Skoog
Chapter8: Sampling, Standardization, And Calibration
Section: Chapter Questions
Problem 8.1QAP
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From a 10-mL sample, a 1-mL aliquot was taken and diluted to 100mL
From this, a 5-mL aliquot was taken and diluted to 20mL.
The final 20mL was found to have a concentration of 0.004M analyte X.
What is the concentration of analyte X in the 10-mL sample?

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