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ainty ill Ul Gol Data from M. J. GOIUCU S. Harshman, and K. Ashley, J. Chem. Ed. 2008, 83, YJU. jor source of tion of Sr in (a) Volume is not constant, so follow the procedure of Figures 5-5 and 5-6 to find ppm Pb(II) in the 1.00-mL extract (b) Use the formula in Problem 5-19 to find the uncertainty in the intercept of the graph. Assuming that the uncertainty in intercept is larger than other uncertainties, estimate the uncertainty in ppm Pb(II) in the 1.00-mL extract. 5-22. Internal standard. A mixture containing 12.8 uM analyte (X) and 44.4 µM standard (S) gave chromatographic peak areas of 306 for X and 511 for S. A second solution containing an unknown quantity of X plus 55.5 µM S had peak areas of 251 for X and 563 for S. Find [X] in the second ws standard ured by an 1 negligible ple, so you The signal o measure tration of solution. 5-23. Internal standard. A solution was prepared by mixing 10.00 mL of unknown (X) with 5.00 mL of standard (S) con- taining 8.24 µg S/mL and diluting to 50.0 mL. The measured signal quotient (signal due to X/signal due to S) was 1.69. In a separate experiment it

ainty ill Ul Gol Data from M. J. GOIUCU S. Harshman, and K. Ashley, J. Chem. Ed. 2008, 83, YJU. jor source of tion of Sr in (a) Volume is not constant, so follow the procedure of Figures 5-5 and 5-6 to find ppm Pb(II) in the 1.00-mL extract (b) Use the formula in Problem 5-19 to find the uncertainty in the intercept of the graph. Assuming that the uncertainty in intercept is larger than other uncertainties, estimate the uncertainty in ppm Pb(II) in the 1.00-mL extract. 5-22. Internal standard. A mixture containing 12.8 uM analyte (X) and 44.4 µM standard (S) gave chromatographic peak areas of 306 for X and 511 for S. A second solution containing an unknown quantity of X plus 55.5 µM S had peak areas of 251 for X and 563 for S. Find [X] in the second ws standard ured by an 1 negligible ple, so you The signal o measure tration of solution. 5-23. Internal standard. A solution was prepared by mixing 10.00 mL of unknown (X) with 5.00 mL of standard (S) con- taining 8.24 µg S/mL and diluting to 50.0 mL. The measured signal quotient (signal due to X/signal due to S) was 1.69. In a separate experiment it

Chemistry
Chemistry
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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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ainty ill Ul Gol Data from M. J. GOIUCU S. Harshman, and K. Ashley, J. Chem. Ed. 2008, 83, YJU. jor source of tion of Sr in (a) Volume is not constant, so follow the procedure of Figures 5-5 and 5-6 to find ppm Pb(II) in the 1.00-mL extract (b) Use the formula in Problem 5-19 to find the uncertainty in the intercept of the graph. Assuming that the uncertainty in intercept is larger than other uncertainties, estimate the uncertainty in ppm Pb(II) in the 1.00-mL extract. 5-22. Internal standard. A mixture containing 12.8 uM analyte (X) and 44.4 µM standard (S) gave chromatographic peak areas of 306 for X and 511 for S. A second solution containing an unknown quantity of X plus 55.5 µM S had peak areas of 251 for X and 563 for S. Find [X] in the second ws standard ured by an 1 negligible ple, so you The signal o measure tration of solution. 5-23. Internal standard. A solution was prepared by mixing 10.00 mL of unknown (X) with 5.00 mL of standard (S) con- taining 8.24 µg S/mL and diluting to 50.0 mL. The measured signal quotient (signal due to X/signal due to S) was 1.69. In a separate experiment it
Transcribed Image Text:ainty ill Ul Gol Data from M. J. GOIUCU S. Harshman, and K. Ashley, J. Chem. Ed. 2008, 83, YJU. jor source of tion of Sr in (a) Volume is not constant, so follow the procedure of Figures 5-5 and 5-6 to find ppm Pb(II) in the 1.00-mL extract (b) Use the formula in Problem 5-19 to find the uncertainty in the intercept of the graph. Assuming that the uncertainty in intercept is larger than other uncertainties, estimate the uncertainty in ppm Pb(II) in the 1.00-mL extract. 5-22. Internal standard. A mixture containing 12.8 uM analyte (X) and 44.4 µM standard (S) gave chromatographic peak areas of 306 for X and 511 for S. A second solution containing an unknown quantity of X plus 55.5 µM S had peak areas of 251 for X and 563 for S. Find [X] in the second ws standard ured by an 1 negligible ple, so you The signal o measure tration of solution. 5-23. Internal standard. A solution was prepared by mixing 10.00 mL of unknown (X) with 5.00 mL of standard (S) con- taining 8.24 µg S/mL and diluting to 50.0 mL. The measured signal quotient (signal due to X/signal due to S) was 1.69. In a separate experiment it
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