If the standard addition intercept is the major source of uncertainty, find the uncertainty in the concentration of Sr in tooth enamel in parts per million. Find the 95% confidence interval for Sr in tooth enamel. Find the concentration of Sr and its uncertainty in the 10.0-mL sample solution in parts per billion = ng/mL.concentration: 8.72concentration: 117.05Find the concentration of Sr in tooth enamel in parts per million = µg/g.uncertainty:102.07IncorrectppbIf the standard addition intercept is the major source of uncertainty, find the uncertainty in the concentration of Sr in toothenamel in parts per million.95% confidence interval:ppm324.78uncertainty:ppmFind the 95% confidence interval for Sr in tooth enamel. Student's + values can be found in the table.0.43ppmPpb Standard addition graph. Tooth enamel consists mainly of the mineral calcium hydroxyapatite, Ca₁0(PO4)6(OH)2. Traceelements in teeth of archeological specimens provide anthropologist with clues about diet and diseases of ancient people.Students at Hamline University used atomic absorption spectroscopy to measure strontium in enamel from extracted wisdomteeth. Solutions were prepared as in Figure 5-8 with a constant total volume of 10.0 mL containing 0.732 mg of dissolved toothenamel plus variable concentrations of added Sr.Added Sr (ng/mL = ppb)| Signal (arbitrary units)028.02.5034.35.0042.87.5051.510.0058.6Place 5 mL of unknownin each flask.Add 0, 5, 10, 15, and 20 mLof standard to the five flasks.Add analytical reagents toeach flask, dilute to the50-ml mark, and mix.2345t1x45x-Intercept-[X]+Harris/Lucy, Quantitative Chemical Analysis, 10e, Ⓒ 2020 W. H. Freeman and Company[S] -

If the standard addition intercept is the major source of uncertainty, find the uncertainty in the concentration of Sr in tooth enamel in parts per million. uncertainty: 102.07 Incorrect Find the 95% confidence interval for Sr in tooth enamel. Student's / values can be found in the table. 95% confidence interval: ppm 324.78 ppm

If the standard addition intercept is the major source of uncertainty, find the uncertainty in the concentration of Sr in tooth enamel in parts per million. uncertainty: 102.07 Incorrect Find the 95% confidence interval for Sr in tooth enamel. Student's / values can be found in the table. 95% confidence interval: ppm 324.78 ppm

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter21: Surface Characterization By Spectroscopy And Microscopy

Section: Chapter Questions

Problem 21.5QAP

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