A chemist received a report from an analysis involving the iron-phenanthroline method, containing the calibration curve for Fe standards (20 ppm, 30 ppm, 40 ppm, 50 ppm, and 60 ppm) and their corrected absorbances. The report stated that the equation of the line and r² were as follows: y = 0.015066 x -0.154424 r² = 0.9997 The sample they tested gave a corrected reading of 0.417. How much Fe is present in ppm? A) 2.80 B 37.93 17.43 2.60 D

A chemist received a report from an analysis involving the iron-phenanthroline method, containing the calibration curve for Fe standards (20 ppm, 30 ppm, 40 ppm, 50 ppm, and 60 ppm) and their corrected absorbances. The report stated that the equation of the line and r² were as follows: y = 0.015066 x -0.154424 r² = 0.9997 The sample they tested gave a corrected reading of 0.417. How much Fe is present in ppm? A) 2.80 B 37.93 17.43 2.60 D

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter8: Sampling, Standardization, And Calibration

Section: Chapter Questions

Problem 8.23QAP

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A chemist received a report from an analysis involving the iron-phenanthroline method, containing the calibration curve for Fe standards (20 ppm, 30 ppm, 40 ppm, 50 ppm, and 60 ppm) and their corrected absorbances. The report stated that the equation of the line and r2 were as follows: y = 0.015066 x – 0.154424 r2 = 0.9997 The sample they tested gave a corrected reading of 0.417. How much Fe is present in ppm? 2.80 17.43 2.60 37.93
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