Chemistry: An Atoms First Approach
2nd Edition
ISBN: 9781305079243
Author: Steven S. Zumdahl, Susan A. Zumdahl
Publisher: Cengage Learning
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Textbook Question
Chapter 5, Problem 142AE
ABS plastic is a tough, hard plastic used in applications requiring shock resistance. The
a. A sample of ABS plastic contains 8.80% N by mass. It took 0.605 g of Br2 to react completely with a 1.20-g sample of ABS plastic. Bromine reacts 1: 1 (by moles) with the butadiene molecules in the polymer and nothing else. What is the percent by mass of acrylonitrile and butadiene in this polymer?
b. What are the relative numbers of each of the monomer units in this polymer?
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Part VII. The H-NMR of a compound with molecular formula C5 H 10 O2 is given below.
Find the following:
(a) The no. of protons corresponding to each signal in the spectra
(6) Give the structure of the compound and assign the signals to each
proton in the compound.
a
70.2
Integration Values
C5H10O2
b
47.7
C
46.5
d
69.5
3.6 3.5
3.4 3.3 3.2 3.1 3.0
2.9 2.8
2.7
2.6 2.5
2.4 2.3 2.2 2.1 2.0
Chemical Shift (ppm)
1.9
1.8
1.7 1.6
1.5
1.4 1.3 1.2
1.1 1.0
0.9 0.8
Part 111. 1 H-NMR spectrum of a compound with integration values in red is given below.
Answer the following:
(a) write the signals in the 'H-NMR spectrum to the corresponding protons on the structure
of the molecule below.
(b) Identify the theoretical multiplicities for each proton in the compound. Also give the possible.
complex splitting patterns assuming J values are not similar.
там
Br
22
2
3
6
4 7.2 7.0 6.8 6.6 6.4 6.2 6.0 5.8 5.6 5.4 5.2 5.0 4.8 4.6 4.4 4.2 4.0 3.8 3.6 3.4 3.2 3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0
Chemical Shift (ppm)
ra.
Br
2
3
6
6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
Chemical Shift (ppm)
2
2
Br
7.3
7.2
7.1
7.0 6.9
6.7 6.6 6.5
6.4
6.3
6.2
6.1
6.0
Chemical Shift (ppm)
5.9
5.8 5.7
5.5 5.4 5.3 5.2
5.0 4.9
1600°
1538°C
1493°C
In the diagram, the letter L indicates
that it is a liquid. Indicate its
components in the upper region
where only L is indicated.
The
iron-iron carbide phase
diagram.
Temperature (°C)
1400
8
1394°C
y+L
1200
2.14
y, Austenite
10000
912°C
800a
0.76
0.022
600
400
(Fe)
a, Ferrite
Composition (at% C)
15
1147°C
a + Fe3C
2
3
Composition (wt% C)
L
2500
4.30
2000
y + Fe3C
727°C
1500
Cementite (Fe3C)
1000
4
5
6
6.70
Temperature (°F)
Chapter 5 Solutions
Chemistry: An Atoms First Approach
Ch. 5 - Prob. 1RQCh. 5 - Atomic masses are relative masses. What does this...Ch. 5 - The atomic mass of boron (B) is given in the...Ch. 5 - What three conversion factors and in what order...Ch. 5 - Fig. 5-5 illustrates a schematic diagram of a...Ch. 5 - What is the difference between the empirical and...Ch. 5 - Consider the hypothetical reaction between A2 and...Ch. 5 - Prob. 8RQCh. 5 - Consider the following mixture of SO2(g) and...Ch. 5 - Why is the actual yield of a reaction often less...
Ch. 5 - The following are actual student responses to the...Ch. 5 - What information do we get from a chemical...Ch. 5 - You are making cookies and are missing a key...Ch. 5 - Nitrogen gas (N2) and hydrogen gas (H2) react to...Ch. 5 - For the preceding question, which of the following...Ch. 5 - Prob. 6ALQCh. 5 - Prob. 7ALQCh. 5 - Consider an iron bar on a balance as shown. As the...Ch. 5 - You may have noticed that water sometimes drips...Ch. 5 - Prob. 10ALQCh. 5 - What is true about the chemical properties of the...Ch. 5 - Is there a difference between a homogeneous...Ch. 5 - Prob. 13ALQCh. 5 - The average mass of a carbon atom is 12.011....Ch. 5 - Can the subscripts in a chemical formula be...Ch. 5 - Consider the equation 2A + B . A2B. If you mix 1.0...Ch. 5 - According to the law of conservation of mass, mass...Ch. 5 - Which of the following pairs of compounds have the...Ch. 5 - Atoms of three different elements are represented...Ch. 5 - In chemistry, what is meant by the term mole? What...Ch. 5 - Which (if any) of the following is (are) true...Ch. 5 - Consider the equation 3A + B C + D. You react 4...Ch. 5 - Reference Section 5-2 to find the atomic masses of...Ch. 5 - Avogadros number, molar mass, and the chemical...Ch. 5 - If you had a mole of U.S. dollar bills and equally...Ch. 5 - Prob. 26QCh. 5 - Which of the following compounds have the same...Ch. 5 - Prob. 28QCh. 5 - How is the mass percent of elements in a compound...Ch. 5 - A balanced chemical equation contains a large...Ch. 5 - Prob. 31QCh. 5 - Hydrogen gas and oxygen gas react to form water,...Ch. 5 - What is the theoretical yield for a reaction, and...Ch. 5 - What does it mean to say a reactant is present in...Ch. 5 - Consider the following generic reaction: A2B2 + 2C...Ch. 5 - Consider the following generic reaction:...Ch. 5 - An element consists of 1.40% of an isotope with...Ch. 5 - An element X bas five major isotopes, which are...Ch. 5 - The element rhenium (Re) bas two naturally...Ch. 5 - Assume silicon has three major isotopes in nature...Ch. 5 - The element europium exists in nature as two...Ch. 5 - The element silver (Ag) has two naturally...Ch. 5 - The mass spectrum of bromine (Br2) consists of...Ch. 5 - The stable isotopes of iron arc 54Fe, 56Fe, 57Fe,...Ch. 5 - Calculate the mass of 500. atoms of iron (Fe).Ch. 5 - What number of Fe atoms and what amount (moles) of...Ch. 5 - Diamond is a natural form of pure carbon. What...Ch. 5 - A diamond contains 5.0 1021 atoms of carbon. What...Ch. 5 - Aluminum metal is produced by passing an electric...Ch. 5 - The Freons are a class of compounds containing...Ch. 5 - Calculate the molar mass of the following...Ch. 5 - Calculate the molar mass of the following...Ch. 5 - What amount (moles) of compound is present in 1.00...Ch. 5 - What amount (moles) of compound is present in 1.00...Ch. 5 - What mass of compound is present in 5.00 moles of...Ch. 5 - What mass of compound is present in 5.00 moles of...Ch. 5 - Prob. 57ECh. 5 - Prob. 58ECh. 5 - Prob. 59ECh. 5 - What number of molecules (or formula units) are...Ch. 5 - What number of atoms of nitrogen are present in...Ch. 5 - Prob. 62ECh. 5 - Freon- 12 (CCI2F2) is used as a refrigerant in air...Ch. 5 - Bauxite, the principal ore used in the production...Ch. 5 - What amount (moles) is represented by each of...Ch. 5 - What amount (moles) is represented by each of...Ch. 5 - What number of atoms of nitrogen are present in...Ch. 5 - Complete the following table.Ch. 5 - Ascorbic acid, or vitamin C (C6H8O6), is an...Ch. 5 - The molecular formula of acetylsalicylic acid...Ch. 5 - Chloral hydrate (C2H3Cl3O2) is a drug formerly...Ch. 5 - Dimethylnitrosamine, (CH3)2N2O , is a carcinogenic...Ch. 5 - Calculate the percent composition by mass of the...Ch. 5 - In 1987 the first substance to act as a...Ch. 5 - Prob. 75ECh. 5 - Arrange the following substances in order of...Ch. 5 - Fungal laccase, a blue protein found in...Ch. 5 - Hemoglobin is the protein that transports oxygen...Ch. 5 - Express the composition of each of the following...Ch. 5 - Considering your answer to Exercise 79, which type...Ch. 5 - Give the empirical formula for each of the...Ch. 5 - Determine the molecular formulas to which the...Ch. 5 - A compound that contains only carbon, hydrogen,...Ch. 5 - The most common form of nylon (nylon-6) is 63.68%...Ch. 5 - There are two binary compounds of mercury and...Ch. 5 - A sample of urea contains 1.121 g N, 0.161 g H,...Ch. 5 - Prob. 87ECh. 5 - Determine the molecular formula of a compound that...Ch. 5 - A compound contains 47.08% carbon, 6.59% hydrogen,...Ch. 5 - Maleic acid is an organic compound composed of...Ch. 5 - One of the components that make up common table...Ch. 5 - A compound contains only C, H, and N. 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Cr(s) + S8(s) ...Ch. 5 - Silicon is produced for the chemical and...Ch. 5 - Prob. 104ECh. 5 - Over the years, the thermite reaction has been...Ch. 5 - The reaction between potassium chlorate and red...Ch. 5 - The reusable booster rockets of the U.S. space...Ch. 5 - One of relatively few reactions that takes place...Ch. 5 - Elixirs such as Atka-Seltzer use the reaction of...Ch. 5 - Aspirin (C9H8O4) is synthesized by reacting...Ch. 5 - Bacterial digestion is an economical method of...Ch. 5 - Phosphorus can be prepared from calcium phosphate...Ch. 5 - Coke is an impure form of carbon that is often...Ch. 5 - The space shuttle environmental control system...Ch. 5 - Consider the reaction between NO(g) and O2(g)...Ch. 5 - Consider the following reaction:...Ch. 5 - Prob. 117ECh. 5 - Consider the following unbalanced equation:...Ch. 5 - Hydrogen peroxide is used as a cleansing agent in...Ch. 5 - Silver sulfadiazine bum-treating cream creates a...Ch. 5 - Hydrogen cyanide is produced industrially from the...Ch. 5 - Acrylonitrile C3H3N) is the starting material for...Ch. 5 - Prob. 123ECh. 5 - DDT, an insecticide harmful to fish, birds, and...Ch. 5 - Bornite (Cu3FeS3) is a copper ore used in the...Ch. 5 - Consider the following unbalanced reaction:...Ch. 5 - In using a mass spectrometer, a chemist sees a...Ch. 5 - Boron consists of two isotopes, 10B and 11B....Ch. 5 - A given sample of a xenon fluoride compound...Ch. 5 - Aspartame is an artificial sweetener that is 160...Ch. 5 - Anabolic steroids are performance enhancement...Ch. 5 - Many cereals are made with high moisture content...Ch. 5 - The compound adrenaline contains 56.79% C, 6.56%...Ch. 5 - Adipic acid is an organic compound composed of...Ch. 5 - Prob. 135AECh. 5 - Some bismuth tablets, a medication used to treat...Ch. 5 - The empirical formula of styrene is CH; the molar...Ch. 5 - Terephthalic acid is an important chemical used in...Ch. 5 - A sample of a hydrocarbon (a compound consisting...Ch. 5 - A binary compound between an unknown element E and...Ch. 5 - A 0.755-g sample of hydrated copper(II) sulfate...Ch. 5 - ABS plastic is a tough, hard plastic used in...Ch. 5 - Prob. 143AECh. 5 - Methane (CH4) is the main component of marsh gas....Ch. 5 - A potential fuel for rockets is a combination of...Ch. 5 - A 0.4230-g sample of impure sodium nitrate was...Ch. 5 - Prob. 147AECh. 5 - Commercial brass, an alloy of Zn and Cu, reacts...Ch. 5 - Prob. 149AECh. 5 - You have seven closed containers, each with equal...Ch. 5 - A substance X2Z has the composition (by mass) of...Ch. 5 - Consider samples of phosphine (PH3), water (H2O),...Ch. 5 - Calculate the number of moles for each compound in...Ch. 5 - Arrange the following substances in order of...Ch. 5 - Para-cresol, a substance used as a disinfectant...Ch. 5 - A compound with molar mass 180.1 g/mol has the...Ch. 5 - Prob. 157CWPCh. 5 - Consider the following unbalanced chemical...Ch. 5 - Sulfur dioxide gas reacts with sodium hydroxide to...Ch. 5 - Gallium arsenide, GaAs, has gained widespread use...Ch. 5 - Consider the following data for three binary...Ch. 5 - Natural rubidium has the average mass of 85.4678 u...Ch. 5 - A compound contains only carbon, hydrogen,...Ch. 5 - Nitric acid is produced commercially by the...Ch. 5 - When the supply of oxygen is limited, iron metal...Ch. 5 - A 9.780-g gaseous mixture contains ethane (C2H6)...Ch. 5 - Zinc and magnesium metal each reacts with...Ch. 5 - Prob. 168CPCh. 5 - Consider a gaseous binary compound with a molar...Ch. 5 - Prob. 170CPCh. 5 - Prob. 171CPCh. 5 - The aspirin substitute, acetaminophen (C8H9O2N),...Ch. 5 - An element X forms both a dichloride (XCl2) and a...Ch. 5 - Prob. 174CPCh. 5 - When aluminum metal is heated with an element from...Ch. 5 - Consider a mixture of potassium chloride and...Ch. 5 - Ammonia reacts with O2 to form either NO(g) or...Ch. 5 - You take 1.00 g of an aspirin tablet (a compound...Ch. 5 - With the advent of techniques such as scanning...Ch. 5 - Tetrodotoxin is a toxic chemical found in fugu...Ch. 5 - Prob. 181IPCh. 5 - Prob. 182IPCh. 5 - Prob. 183IPCh. 5 - A 2.077-g sample of an element, which has an...Ch. 5 - Consider the following balanced chemical equation:...
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