a stock solu in 1.600 pg/mL. Two possible methods of dilution are stated below. For each method, calculate the resulting uncertainty in conc manufacturer's tolerances in the Tolerances of Class A Volumetric Flasks table and Tolerances of Class A Transfer Pipets table for ertainties. (a) Dilute 10.00 mL up to 100 ml with a transfer pipet and volumetric flask. Then take 10.00 mL of the dilute solution and d to 100 mL. 40 Ha/mL (b) Dilute 1.000 mL up to 100 mL with a transfer pipet and volumetric flask. pg/mL lain why one method is more precise than the other. 0.00
a stock solu in 1.600 pg/mL. Two possible methods of dilution are stated below. For each method, calculate the resulting uncertainty in conc manufacturer's tolerances in the Tolerances of Class A Volumetric Flasks table and Tolerances of Class A Transfer Pipets table for ertainties. (a) Dilute 10.00 mL up to 100 ml with a transfer pipet and volumetric flask. Then take 10.00 mL of the dilute solution and d to 100 mL. 40 Ha/mL (b) Dilute 1.000 mL up to 100 mL with a transfer pipet and volumetric flask. pg/mL lain why one method is more precise than the other. 0.00
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:You have a stock solution certified by a manufacturer to contain 160.0 + 0.3 pg So,2-/mL. You would like to dilute it by a factor of 100 to
obtain 1.600 pg/mL. Two possible methods of dilution are stated below. For each method, calculate the resulting uncertainty in concentration.
Use manufacturer's tolerances in the Tolerances of Class A Volumetric Flasks table and Tolerances of ClassA Transfer Pipets table for
uncertainties.
(a) Dilute 10.00 mL up to 100 mL with a transfer pipet and volumetric flask. Then take 10.00 mL of the dilute solution and dilute it again
to 100 mL.
ug/mL
(b) Dilute 1.000 mL up to 100 mL with a transfer pipet and volumetric flask.
pg/mL
Explain why one method is more precise than the other.
Select- v is more precise because the uncertainty in the 10.00 mL transfer pipet is
% and the uncertainty in the
1.000 ml transfer pipet is
%.
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