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# A standard solution was put through appropriate dilutions to give the concentrationsof ISBN: 9780495012016 317

## Solution for problem 14-11 Chapter 14

Principles of Instrumental Analysis | 6th Edition

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Problem 14-11

A standard solution was put through appropriate dilutions to give the concentrationsof iron shown helow. The iron(I1)-1,IO,phenanthroline complex was thenformed in 25.0mL aliquots of these solutions, following whieh each was dilutedto 50.0 mL. The following absorbances (1.00-cm cells) were recorded at510 nm:(a) Plot a calibration eurve from these data.(b) Use the method of least squares to find an equation relating absorbance andthe concentration of iron(II).(c) Calculate the standard deviation of the slope and intercept

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August 30, 2016 (Chapter 2, continued)  Density Mass d= m o Density= Volume  v o Unit for density is g/cm or g/mL. o cm (or cc’s for students going into medicine) is the same as mL. o Finding the density for solid objects:  Take a graduated cylinder and fill with water.  Place the object into the water gently so that you do not...

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##### ISBN: 9780495012016

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