1.The following data was used to determine theconcentration of arsenic in a river using atomic absorptionspectrometry. Three replicate measurements were recordedfor each sample and the absorbance values below are theaverages.Conc. As (ppb) Abs.2.50.02975.00.05887.50.078210.00.1039Unknown 0.0615a. Graph the data and determine the slope and andintercept.Use Excel-possibly the LINEST function- todetermine the standard error about the regression. This isthe uncertainty in the absorbance.b.C.d.e.Calculate the concentration of the arsenic in ppb. Donot worry about rounding to the correct number ofsignificant figures until part e of this question.Determine the absolute uncertainty (i.e., standarddevation) of the arsenic concentration for the unknown.Write the As concentration and its standard deviation tothe correct number of significant figures.

Given the data,Concentration (ppb)Absorbance2.50.029750.05887.50.0782100.1039Unknown0.0615We are…

Answered: The following data was used to…

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter7: Analytic Trigonometry

Section7.6: The Inverse Trigonometric Functions

Problem 94E

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