EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
7th Edition
ISBN: 8220100853180
Author: STOKER
Publisher: CENGAGE L
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Chapter 26.4, Problem 4QQ
Interpretation Introduction
Interpretation: To identify the correct equation that represents “nitrogen characterization” for the first step in the urea cycle.
Concept introduction: Urea cycle is a cyclic biochemical pathway that involves the production of urea using ammonium ions and aspartate molecules as nitrogen sources. It converts toxic ammonium ion to urea which is then excreted from the body in urine. The urea cycle is as follows:
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(a
4 shows scanning electron microscope (SEM) images of extruded
actions of packing bed for two capillary columns of different diameters,
al 750 (bottom image) and b) 30-μm-i.d. Both columns are packed with the
same stationary phase, spherical particles with 1-um diameter.
A) When the columns were prepared, the figure shows that the column with
the larger diameter has more packing irregularities. Explain this observation.
B) Predict what affect this should have on band broadening and discuss your
prediction using the van Deemter terms.
C) Does this figure support your explanations in application question 33?
Explain why or why not and make any changes in your answers in light of
this figure.
Figure 4 SEM images of
sections of packed columns
for a) 750 and b) 30-um-i.d.
capillary columns.³
fcrip
= ↓ bandwidth Il temp
32. What impact (increase, decrease, or no change) does each of the following conditions have on the individual
components of the van Deemter equation and consequently, band broadening?
Increase temperature
Longer column
Using a gas mobile phase
instead of liquid
Smaller particle stationary phase
Multiple Paths
Diffusion
Mass Transfer
34. Figure 3 shows Van Deemter plots for a solute molecule using different column inner diameters (i.d.).
A) Predict whether decreasing the column inner diameters increase or decrease bandwidth.
B) Predict which van Deemter equation coefficient (A, B, or C) has the greatest effect on increasing or
decreasing bandwidth as a function of i.d. and justify your answer.
Figure 3 Van Deemter plots for hydroquinone using different column inner diameters (i.d. in μm). The data was
obtained from liquid chromatography experiments using fused-silica capillary columns packed with 1.0-μm particles.
35
20
H(um)
큰 20
15
90
0+
1500
100
75
550
01
02
594
05
μ(cm/sec)
30
15
10
Chapter 26 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
Ch. 26.1 - Which of the following statements about dietary...Ch. 26.1 - Dietary protein materials as they leave the...Ch. 26.1 - The inactive form of pepsin is converted to its...Ch. 26.1 - Which of the following is not a proteolytic...Ch. 26.2 - The dominant use for the amino acids of the amino...Ch. 26.2 - The most abundant amino acid in the amino acid...Ch. 26.2 - Prob. 3QQCh. 26.3 - Prob. 1QQCh. 26.3 - Prob. 2QQCh. 26.3 - The net effect of transamination is to collect the...
Ch. 26.3 - Prob. 4QQCh. 26.3 - Prob. 5QQCh. 26.3 - Most aminotransferases are specific for the keto...Ch. 26.4 - Which of the following statements concerning the...Ch. 26.4 - Prob. 2QQCh. 26.4 - The two fuels for the urea cycle are a. carbamoyl...Ch. 26.4 - Prob. 4QQCh. 26.4 - Prob. 5QQCh. 26.4 - Prob. 6QQCh. 26.5 - Which of the following statements concerning the...Ch. 26.5 - Prob. 2QQCh. 26.5 - Prob. 3QQCh. 26.5 - Prob. 4QQCh. 26.6 - Prob. 1QQCh. 26.6 - How many of the standard amino acids are...Ch. 26.6 - The simplest pathways for amino acid biosynthesis...Ch. 26.7 - Prob. 1QQCh. 26.7 - Which of the following statements concerning the...Ch. 26.7 - Prob. 3QQCh. 26.7 - In the degradation of heme, the iron atom present...Ch. 26.8 - In degradation of the sulfur-containing amino acid...Ch. 26.8 - Prob. 2QQCh. 26.8 - Prob. 3QQCh. 26.8 - Prob. 4QQCh. 26.9 - Prob. 1QQCh. 26.9 - Prob. 2QQCh. 26.9 - Prob. 3QQCh. 26.10 - Prob. 1QQCh. 26.10 - Prob. 2QQCh. 26.10 - Prob. 3QQCh. 26 - Prob. 26.1EPCh. 26 - Indicate whether each of the following aspects of...Ch. 26 - Indicate whether each of the following pairings of...Ch. 26 - Indicate whether each of the following pairings of...Ch. 26 - Indicate whether each of the following statements...Ch. 26 - Prob. 26.6EPCh. 26 - Prob. 26.7EPCh. 26 - Prob. 26.8EPCh. 26 - Prob. 26.9EPCh. 26 - Prob. 26.10EPCh. 26 - Prob. 26.11EPCh. 26 - Prob. 26.12EPCh. 26 - Prob. 26.13EPCh. 26 - Prob. 26.14EPCh. 26 - Indicate whether each of the following situations...Ch. 26 - Indicate whether each of the following situations...Ch. 26 - Prob. 26.17EPCh. 26 - Prob. 26.18EPCh. 26 - Prob. 26.19EPCh. 26 - Prob. 26.20EPCh. 26 - Prob. 26.21EPCh. 26 - Prob. 26.22EPCh. 26 - Prob. 26.23EPCh. 26 - Prob. 26.24EPCh. 26 - Prob. 26.25EPCh. 26 - Prob. 26.26EPCh. 26 - Prob. 26.27EPCh. 26 - Prob. 26.28EPCh. 26 - Prob. 26.29EPCh. 26 - Prob. 26.30EPCh. 26 - Prob. 26.31EPCh. 26 - Prob. 26.32EPCh. 26 - Prob. 26.33EPCh. 26 - Prob. 26.34EPCh. 26 - Prob. 26.35EPCh. 26 - Prob. 26.36EPCh. 26 - Prob. 26.37EPCh. 26 - Prob. 26.38EPCh. 26 - Prob. 26.39EPCh. 26 - Prob. 26.40EPCh. 26 - Prob. 26.41EPCh. 26 - Prob. 26.42EPCh. 26 - Prob. 26.43EPCh. 26 - Draw the structure of the -keto acid produced from...Ch. 26 - Prob. 26.45EPCh. 26 - Prob. 26.46EPCh. 26 - Prob. 26.47EPCh. 26 - Prob. 26.48EPCh. 26 - Prob. 26.49EPCh. 26 - Prob. 26.50EPCh. 26 - Prob. 26.51EPCh. 26 - Prob. 26.52EPCh. 26 - Prob. 26.53EPCh. 26 - Prob. 26.54EPCh. 26 - Prob. 26.55EPCh. 26 - Prob. 26.56EPCh. 26 - Prob. 26.57EPCh. 26 - Prob. 26.58EPCh. 26 - Prob. 26.59EPCh. 26 - Prob. 26.60EPCh. 26 - Prob. 26.61EPCh. 26 - Prob. 26.62EPCh. 26 - Prob. 26.63EPCh. 26 - Prob. 26.64EPCh. 26 - Prob. 26.65EPCh. 26 - Prob. 26.66EPCh. 26 - Prob. 26.67EPCh. 26 - Prob. 26.68EPCh. 26 - Prob. 26.69EPCh. 26 - Prob. 26.70EPCh. 26 - Prob. 26.71EPCh. 26 - Prob. 26.72EPCh. 26 - Prob. 26.73EPCh. 26 - Prob. 26.74EPCh. 26 - Prob. 26.75EPCh. 26 - Prob. 26.76EPCh. 26 - Prob. 26.77EPCh. 26 - Prob. 26.78EPCh. 26 - Prob. 26.79EPCh. 26 - Prob. 26.80EPCh. 26 - Prob. 26.81EPCh. 26 - Prob. 26.82EPCh. 26 - Prob. 26.83EPCh. 26 - Prob. 26.84EPCh. 26 - Prob. 26.85EPCh. 26 - Prob. 26.86EPCh. 26 - Prob. 26.87EPCh. 26 - Prob. 26.88EPCh. 26 - Prob. 26.89EPCh. 26 - Prob. 26.90EPCh. 26 - Prob. 26.91EPCh. 26 - Prob. 26.92EPCh. 26 - Prob. 26.93EPCh. 26 - Prob. 26.94EPCh. 26 - Prob. 26.95EPCh. 26 - Prob. 26.96EPCh. 26 - Prob. 26.97EPCh. 26 - Which bile pigment is responsible for the...Ch. 26 - Prob. 26.99EPCh. 26 - Prob. 26.100EPCh. 26 - Prob. 26.101EPCh. 26 - Prob. 26.102EPCh. 26 - Prob. 26.103EPCh. 26 - Prob. 26.104EPCh. 26 - Prob. 26.105EPCh. 26 - Prob. 26.106EPCh. 26 - Prob. 26.107EPCh. 26 - Prob. 26.108EPCh. 26 - Prob. 26.109EPCh. 26 - Prob. 26.110EPCh. 26 - Prob. 26.111EPCh. 26 - Prob. 26.112EPCh. 26 - Prob. 26.113EPCh. 26 - Prob. 26.114EPCh. 26 - Prob. 26.115EPCh. 26 - Prob. 26.116EP
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