CHEMISTRY IN FOCUS (LL)-TEXT
7th Edition
ISBN: 9781337399845
Author: Tro
Publisher: CENGAGE L
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Chapter 11, Problem 54E
Interpretation Introduction
Interpretation:
The statement “Scientists suggest that the ozone layer is restored by chemically forming ozone and pumping it into the stratosphere” is to be explained.
Concept Introduction:
Ozone is an atmospheric gas that absorbs UV light from the Sun reaching the surface of the earth and thus protects the life on earth from excessive UV exposure. It is found in the stratosphere of earth and is composed of a high concentration of ozone gas. This layer is very beneficial for the atmosphere of earth.
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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
elow are
experimentally determined van Deemter plots of column efficiency, H, vs. flow rate. H is a
quantitative measurement of band broadening. The left plot is for a liquid chromatography application and the
night is for gas chromatography. Compare and contrast these two plots in terms of the three band broadening
mechanisms presented in this activity. How are they similar? How do they differ? Justify your answers.?
0.4
H (mm)
0.2
0.1-
0.3-
0
0.5
H (mm)
8.0
7.0
6.0
5.0
4.0-
3.0
T
+++
1.0
1.5
0
2.0
4.0
Flow Rate, u (cm/s)
6.0
8.0
Flow Rate, u (cm/s)
Predict the products of this organic reaction:
+
H
ZH
NaBH3CN
H+
n.
?
Click and drag to start drawing a
structure.
X
Chapter 11 Solutions
CHEMISTRY IN FOCUS (LL)-TEXT
Ch. 11 - Prob. 11.1YTCh. 11 - A balloon has an initial temperature of 30.0C and...Ch. 11 - Prob. 11.3YTCh. 11 - Prob. 1SCCh. 11 - Prob. 2SCCh. 11 - Prob. 3SCCh. 11 - Prob. 1ECh. 11 - Prob. 2ECh. 11 - Prob. 3ECh. 11 - Prob. 4E
Ch. 11 - Prob. 5ECh. 11 - Prob. 6ECh. 11 - Prob. 7ECh. 11 - Prob. 8ECh. 11 - Prob. 9ECh. 11 - Prob. 10ECh. 11 - Prob. 11ECh. 11 - Prob. 12ECh. 11 - Why is oxygen central to the existence of animal...Ch. 11 - Prob. 14ECh. 11 - Prob. 15ECh. 11 - Prob. 16ECh. 11 - Prob. 17ECh. 11 - Prob. 18ECh. 11 - Prob. 19ECh. 11 - What are the adverse health and environmental...Ch. 11 - Prob. 21ECh. 11 - Prob. 22ECh. 11 - Prob. 23ECh. 11 - Prob. 24ECh. 11 - With the help of chemical equations, explain how...Ch. 11 - Prob. 26ECh. 11 - Prob. 27ECh. 11 - Why does ozone deplete severely over Antarctica...Ch. 11 - Has ozone been depleted over other areas of the...Ch. 11 - Prob. 30ECh. 11 - Prob. 31ECh. 11 - Prob. 32ECh. 11 - Prob. 33ECh. 11 - Prob. 34ECh. 11 - Prob. 35ECh. 11 - Prob. 36ECh. 11 - The pressure on Mt. Everest is approximately 0.31...Ch. 11 - Prob. 38ECh. 11 - Prob. 39ECh. 11 - The pressure in Denver, Colorado, is approximately...Ch. 11 - Prob. 41ECh. 11 - Prob. 42ECh. 11 - Jet airplanes often fly in the lower stratosphere,...Ch. 11 - Prob. 44ECh. 11 - Prob. 45ECh. 11 - Prob. 46ECh. 11 - Prob. 47ECh. 11 - A 2.8 L balloon is warmed over a toaster, and its...Ch. 11 - A cylinder with a movable piston has an initial...Ch. 11 - Prob. 50ECh. 11 - Prob. 51ECh. 11 - Prob. 52ECh. 11 - Prob. 53ECh. 11 - Prob. 54ECh. 11 - Explain the difference between the effects of...Ch. 11 - Prob. 58ECh. 11 - Prob. 59ECh. 11 - Prob. 60E
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