Chemistry, Books a la Carte Edition and Modified Mastering Chemistry with Pearson eText & ValuePack Access Card (7th Edition)
7th Edition
ISBN: 9780134172514
Author: John E. McMurry
Publisher: PEARSON
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Chapter 3, Problem 3.112CP
Interpretation Introduction
Interpretation:
The discrepancy between the molecular weight of ethylene glycol obtained from periodic table and experimental high resolution mass spectrometry should be explained.
Concept introduction:
The molecular weight of any molecule is generally calculated as the sum of atomic weights of all the participating atoms of each element.
The atomic weights are already calculated and placed in the periodic table which helps to determine the value of molecular weight. These atomic weights are generally the average weight of all the
In mass spectroscopy, the weights of isotopes are taken into consideration which may vary from the average atomic weight.
Given:
Molecular weight of ethylene glycol from calculation through standard periodic table data is
Molecular weight of ethylene glycol from high resolution mass spectroscopy is
To explain:
The discrepancy between molecular weights of ethylene glycol calculated through periodic table and high resolution mass spectrometry.
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Chapter 3 Solutions
Chemistry, Books a la Carte Edition and Modified Mastering Chemistry with Pearson eText & ValuePack Access Card (7th Edition)
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