ORGANIC CHEMISTRY (LL)-W/SOLN.>CUSTOM<
10th Edition
ISBN: 9781259972348
Author: Carey
Publisher: MCG CUSTOM
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Chapter 28.11, Problem 11P
Interpretation Introduction
Interpretation: The repeating unit of Nomex has to be stated.
Concept introduction:
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Heparin is used as an anti-coagulant. A risk of heparin use is thrombocytopenia, or low platelet
count. This risk is minimized with the use of low molecular weight heparins (LMWH), therefore it is
desirable to separate LMWH from higher molecular weight heparins. The method of choice to do
this is molecular exclusion chromatography. Below is a chromatogram from a molecular exclusion
chromatographic run. Peaks ranging from A to J are clearly distinguishable. The heparin mixture
that was analyzed had anywhere from 6 to 30 repeat units of monomer (where the heparin with 30
repeat units would be roughly five times the size of the heparin with six repeat units).
a. Which letter most likely represents the peak with 6 repeat units given these heparin polymers
were separated with molecular exclusion chromatography?
b. Explain your reasoning describing the mechanism of retention in molecular exclusion
chromatography.
100
80
60
60
Relative Abundance
40
40
E
GH
20
20
B
A
36 38 40 42 44 46 48 50
50…
HELP NOW PLEASE ! URGENT!
HELP NOW PLEASE ! URGENT!
Chapter 28 Solutions
ORGANIC CHEMISTRY (LL)-W/SOLN.>CUSTOM<
Ch. 28.2 - Prob. 1PCh. 28.3 - Prob. 2PCh. 28.3 - Prob. 3PCh. 28.4 - Prob. 4PCh. 28.7 - Problem 28.5 (a) Write a chemical equation for the...Ch. 28.7 - Prob. 6PCh. 28.8 - Prob. 7PCh. 28.9 - Problem 28.8 How will the average chain length of...Ch. 28.9 - Prob. 9PCh. 28.11 - Prob. 10P
Ch. 28.11 - Prob. 11PCh. 28.12 - Prob. 12PCh. 28.13 - Prob. 13PCh. 28.14 - Prob. 14PCh. 28 - Prob. 15PCh. 28 - Prob. 16PCh. 28 - Prob. 17PCh. 28 - Prob. 18PCh. 28 - Prob. 19PCh. 28 - Prob. 20PCh. 28 - Of the following monomers, which one would undergo...Ch. 28 - Prob. 22PCh. 28 - Polymerization of styrene can occur by a...Ch. 28 - Styrene undergoes anionic polymerization at a...Ch. 28 - Prob. 25PCh. 28 - Prob. 26PCh. 28 - Prob. 27PCh. 28 - Prob. 28PCh. 28 - Prob. 29PCh. 28 - Prob. 30PCh. 28 - Prob. 31PCh. 28 - Prob. 32DSPCh. 28 - Prob. 33DSPCh. 28 - Prob. 34DSPCh. 28 - Prob. 35DSPCh. 28 - Prob. 36DSPCh. 28 - Prob. 37DSPCh. 28 - Prob. 38DSP
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