You have a stock solution certified by a manufacturer to contain 225.0 ± 0.4 ug SO-/mL. You would like to dilute it by a fac of 100 to obtain 2.250 ug/mL. Two possible methods of dilution are stated. For each method, calculate the resulting absolute uncertainty in concentration. Use the manufacturer's tolerances in the table for uncertainties. Glassware Tolerance 1-mL transfer pipet +0.006 mL 10-mL transfer pipet +0.02 mL 100-mL volumetric flask +0.08 mL
You have a stock solution certified by a manufacturer to contain 225.0 ± 0.4 ug SO-/mL. You would like to dilute it by a fac of 100 to obtain 2.250 ug/mL. Two possible methods of dilution are stated. For each method, calculate the resulting absolute uncertainty in concentration. Use the manufacturer's tolerances in the table for uncertainties. Glassware Tolerance 1-mL transfer pipet +0.006 mL 10-mL transfer pipet +0.02 mL 100-mL volumetric flask +0.08 mL
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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![You have a stock solution certified by a manufacturer to contain 225.0 + 0.4 ug SO-/mL. You would like to dilute it by a factor
of 100 to obtain 2.250 ug/mL. Two possible methods of dilution are stated. For each method, calculate the resulting absolute
uncertainty in concentration. Use the manufacturer's tolerances in the table for uncertainties.
Glassware
Tolerance
1-mL transfer pipet
+0.006 mL
10-mL transfer pipet
+0.02 mL
100-mL volumetric flask
+0.08 mL
Method 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.
0.004
absolute uncertainty: +
ug/mL
Incorrect](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb424a08e-94bb-42e0-9291-8bfba3acccd2%2F2f52582e-2e54-432d-877d-51bdd7342044%2Fuy2pm28_processed.png&w=3840&q=75)
Transcribed Image Text:You have a stock solution certified by a manufacturer to contain 225.0 + 0.4 ug SO-/mL. You would like to dilute it by a factor
of 100 to obtain 2.250 ug/mL. Two possible methods of dilution are stated. For each method, calculate the resulting absolute
uncertainty in concentration. Use the manufacturer's tolerances in the table for uncertainties.
Glassware
Tolerance
1-mL transfer pipet
+0.006 mL
10-mL transfer pipet
+0.02 mL
100-mL volumetric flask
+0.08 mL
Method 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.
0.004
absolute uncertainty: +
ug/mL
Incorrect
![Method B: Dilute 1.000 mL up to 100 mL with a transfer pipet and volumetric flask.
0.009
absolute uncertainty: +
ug/mL
Incorrect](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb424a08e-94bb-42e0-9291-8bfba3acccd2%2F2f52582e-2e54-432d-877d-51bdd7342044%2Fdp0lp4g_processed.png&w=3840&q=75)
Transcribed Image Text:Method B: Dilute 1.000 mL up to 100 mL with a transfer pipet and volumetric flask.
0.009
absolute uncertainty: +
ug/mL
Incorrect
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