
General Chemistry: Principles and Modern Applications (11th Edition)
11th Edition
ISBN: 9780132931281
Author: Ralph H. Petrucci, F. Geoffrey Herring, Jeffry D. Madura, Carey Bissonnette
Publisher: PEARSON
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Question
Chapter 3, Problem 34E
Interpretation Introduction
(a)
Interpretation:
The empirical formula of benzo[a]pyrene needs to be determined.
Concept introduction:
The empirical formula of a compound represents the simplest ratio of atoms present in the compound.
The number of moles of a substance can be calculated from mass and molar mass as follows:
Here, m is mass and M is molar mass.
Interpretation Introduction
(b)
Interpretation:
The empirical formula of hexachlorophene needs to be determined.
Concept introduction:
The empirical formula of a compound represents the simplest ratio of atoms present in the compound.
The number of moles of a substance can be calculated from mass and molar mass as follows:
Here, m is mass and M is molar mass.
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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 3 Solutions
General Chemistry: Principles and Modern Applications (11th Edition)
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Ch. 3 - Determine the number of moles of a. N2O4 in a 115...Ch. 3 - Determine the mass, in grams, of a. 2.10102 molS2...Ch. 3 - The content of is 15.5g/100 mLblood. The molar...Ch. 3 - In white phosphorus, P atoms are joined into P,...Ch. 3 - Prob. 15ECh. 3 - Prob. 16ECh. 3 - For the mineral torbernite, Cu( UO2)2( PO4)2,8H2O...Ch. 3 - For the compound Ge[S( CH 2 )4CH2]4 determine a....Ch. 3 - Determine the mass percent H in the hydrocarbon...Ch. 3 - Determine the mass percent O in the mineral...Ch. 3 - Determine the mass percent H in the hydrocarbon...Ch. 3 - Prob. 22ECh. 3 - Determine the mass percent of each of the elements...Ch. 3 - Prob. 24ECh. 3 - Determine the percent, by mass,of the indicated...Ch. 3 - All of the following minerals are semiprecious or...Ch. 3 - Without doing calculations, arrange the following...Ch. 3 - Prob. 28ECh. 3 - Two oxides of sulfur have nearly identical...Ch. 3 - An oxide of chromium used in chrome plating has a...Ch. 3 - Diethylene glycol, used to de-ice aircraft, is a...Ch. 3 - Prob. 32ECh. 3 - Determine the empirical formula of (a) the...Ch. 3 - Prob. 34ECh. 3 - A compound of carbon and hydrogen consists of...Ch. 3 - Selenium, an element used in the manufacture of...Ch. 3 - Indigo, the dye for blue jeans, has a percent...Ch. 3 - Prob. 38ECh. 3 - Prob. 39ECh. 3 - The element X forms the compound XOCI2 containing...Ch. 3 - Prob. 41ECh. 3 - Two compounds of CI and X are found to have...Ch. 3 - A 0.1888 g sample of a hydrocarbon produces 0.6260...Ch. 3 - Para-cresol (p-cresol) is used as a disinfectant...Ch. 3 - Dimethylhydrazine is a carbon-hydrogen-nitrogen...Ch. 3 - Prob. 46ECh. 3 - Without doing detailed calculations, explain which...Ch. 3 - Prob. 48ECh. 3 - A 1.562 g sample of the alcohol CH2CHOHCH2CH2 is...Ch. 3 - Prob. 50ECh. 3 - Indicate the oxidation state of the underlined...Ch. 3 - Indicate the oxidation state of S in (a) SO42 (b)...Ch. 3 - Prob. 53ECh. 3 - Prob. 54ECh. 3 - Prob. 55ECh. 3 - Hydrogen and oxygen usually have oxidation states...Ch. 3 - Prob. 57ECh. 3 - Name these compounds: (a)Ba(...Ch. 3 - Prob. 59ECh. 3 - Prob. 60ECh. 3 - Prob. 61ECh. 3 - Prob. 62ECh. 3 - Write a formula for (a) the chloride of titanium...Ch. 3 - Write formula for (a) an oxide of nitrogen with N...Ch. 3 - Prob. 65ECh. 3 - Supply the formula for the acids: (a) hydrofluoric...Ch. 3 - Name the following compounds and specify which...Ch. 3 - Prob. 68ECh. 3 - Prob. 69ECh. 3 - Prob. 70ECh. 3 - Anhydrous CuSO4 can be used to dry liquids in...Ch. 3 - Anhydrous sodium sulfate, Na2SO4 absorbs water...Ch. 3 - A certain hydrate is found to have the composition...Ch. 3 - An 8.129 g sample of MgSO4H2O is heated until all...Ch. 3 - Prob. 75ECh. 3 - Prob. 76ECh. 3 - Prob. 77ECh. 3 - Prob. 78ECh. 3 - Prob. 79ECh. 3 - Prob. 80ECh. 3 - Prob. 81ECh. 3 - Prob. 82ECh. 3 - The mineral spodumene has the empirical formula...Ch. 3 - Prob. 84IAECh. 3 - Prob. 85IAECh. 3 - The important natural sources of boron compounds...Ch. 3 - Prob. 87IAECh. 3 - By analysis, a compound was found to contain 26.58...Ch. 3 - Prob. 89IAECh. 3 - What is the molecular formula of a hydrocarbon...Ch. 3 - A hydrocarbon mixture consists of 601% by mass of...Ch. 3 - A 0.732 g mature of methane, CH4 and ethane, C2H5...Ch. 3 - The density of a mixture of H2SO4 and water is...Ch. 3 - Prob. 94IAECh. 3 - Prob. 95IAECh. 3 - Prob. 96IAECh. 3 - Prob. 97IAECh. 3 - Prob. 98IAECh. 3 - The metal M forms the sulfate M2( SO4)2. A 0.738 g...Ch. 3 - Prob. 100IAECh. 3 - Prob. 101IAECh. 3 - Prob. 102IAECh. 3 - A 1.013 g sample of ZnSO4H2O is dissolved in water...Ch. 3 - The iodide ion in a 1.552 g sample of the compound...Ch. 3 - Prob. 105IAECh. 3 - The insecticide dieldrin contains carbon, oxygen,...Ch. 3 - Prob. 107IAECh. 3 - The atomic mass of Bi is to be determined by...Ch. 3 - A piece of gold (Au) foil measuring 0.25mm15mm is...Ch. 3 - Prob. 110IAECh. 3 - Prob. 111IAECh. 3 - All-purpose fertilizers contain the essential...Ch. 3 - A hydrate of copper(II) sulfate, when heated, goes...Ch. 3 - Prob. 114FPCh. 3 - Prob. 115SAECh. 3 - Prob. 116SAECh. 3 - Prob. 117SAECh. 3 - Prob. 118SAECh. 3 - Prob. 119SAECh. 3 - Three of the following formulas might be ether an...Ch. 3 - Prob. 121SAECh. 3 - Prob. 122SAECh. 3 - Iron is present red blood and acts to carry oxygen...Ch. 3 - Prob. 124SAECh. 3 - Prob. 125SAECh. 3 - Prob. 126SAECh. 3 - Prob. 127SAECh. 3 - Prob. 128SAECh. 3 - Prob. 129SAECh. 3 - Which compound has a molar mass of...Ch. 3 - Prob. 131SAECh. 3 - Prob. 132SAECh. 3 - A hydrate of Na2SO2 contains almost exactly 50%...Ch. 3 - Malachite is a common copper-containing mineral...Ch. 3 - Prob. 135SAECh. 3 - Ibuprofen is a compound used in painkiller. When a...Ch. 3 - Prob. 137SAE
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