CHEMISTRY-TEXT
8th Edition
ISBN: 9780134856230
Author: Robinson
Publisher: PEARSON
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Chapter 2, Problem 2.27P
Global climate is affected by variations in
(a) the Earth’s orbit around the Sun.
(b) particulates in the atmosphere from pollution or volcanoes.
(c) the Sun’s intensity.
(d) greenhouse gas levels.
(e) all of the above.
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Consider the "C NMR spectrum below.
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The spectrum belongs to which one of the following constitutional isomers of the compound C,H12? Select the single best answer.
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The structure of compound 1,3,5-trimethylbenzene (mesitylene) is given below.
How many signals would you expect to find in the 'H NMR spectrum of 1,3,5-trimethylbenzene (mesitylene)?
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1
How many signals do you expect in the 'H NMR spectrum for this molecule?
CI CI
Cl
Write the answer in the table below.
Also, in each of the drawing areas below is a copy of the molecule, with H atoms shown. In each copy, one of the H atoms is highlighted red. Highlight in red all
other H atoms that would contribute to the same signal as the H already highlighted red.
Note for advanced students: Remember, a multiplet is considered one signal in the 'H NMR spectrum.
1
Number of signals in the 'H NMR spectrum.
☐
For the molecule in the top drawing area, highlight in red any other H atoms that will contribute to the same
signal as the H atom already highlighted red.
If no other H atoms will contribute, check the box at right.
No additional H atoms to highlight in
top molecule
For the molecule in the bottom drawing area, highlight in red any other H atoms that will contribute to the
same signal as the H atom already highlighted red.
If no other H atoms will contribute, check the box at…
Chapter 2 Solutions
CHEMISTRY-TEXT
Ch. 2 - An element is a shiny, silver-colored solid at...Ch. 2 - Prob. 2.2ACh. 2 - PRACTICE 2.3Compounds A and B are colorless gases...Ch. 2 - APPLY 2.4If the chemical formula of compound A in...Ch. 2 - PRACTICE 2.5The gold foil that Rutherford used in...Ch. 2 - Prob. 2.6ACh. 2 - PRACTICE 2.7The isotope 3475Se is used medically...Ch. 2 - APPLY 2.8Element X is toxic to humans in high...Ch. 2 - PRACTICE 2.9Copper metal has two naturally occur-...Ch. 2 - Prob. 2.10A
Ch. 2 - Prob. 2.11PCh. 2 - APPLY 2.12If 2.26 1022 atoms Of element Y have a...Ch. 2 - Use the data from the mass spectrum of asample of...Ch. 2 - Use the data from the mass spectrum of a sample of...Ch. 2 - Which of the following drawings represents a pure...Ch. 2 - Red and blue spheres representatoms of different...Ch. 2 - Thymine, one of the four basesin deoxyribonucleic...Ch. 2 - Prob. 2.18ACh. 2 - Prob. 2.19PCh. 2 - Which of the following drawings most likely...Ch. 2 - Prob. 2.21PCh. 2 - Prob. 2.22ACh. 2 - Prob. 2.23PCh. 2 - Prob. 2.24ACh. 2 - Prob. 2.25PCh. 2 - Prob. 2.26ACh. 2 - Global climate is affected by variations in (a)...Ch. 2 - Prob. 2.28PCh. 2 - How many protons, neutrons, and electrons arein...Ch. 2 - Which sample of H2O has a higher ratio of 18O/16O...Ch. 2 - The last ice age occurred from 110,000 to11,700...Ch. 2 - For this problem, assume that water consistsonly...Ch. 2 - Prob. 2.33PCh. 2 - Prob. 2.34CPCh. 2 - Prob. 2.35CPCh. 2 - Prob. 2.36CPCh. 2 - Prob. 2.37CPCh. 2 - If yellow spheres represent sulfur atoms and red...Ch. 2 - Prob. 2.39CPCh. 2 - Prob. 2.40CPCh. 2 - Which of the following three drawings represents a...Ch. 2 - In the following drawings, red and blue spheres...Ch. 2 - Prob. 2.43CPCh. 2 - Prob. 2.44CPCh. 2 - Prob. 2.45CPCh. 2 - Prob. 2.46SPCh. 2 - Which element accounts for roughly 75% of the...Ch. 2 - Prob. 2.48SPCh. 2 - Prob. 2.49SPCh. 2 - Prob. 2.50SPCh. 2 - Prob. 2.51SPCh. 2 - Prob. 2.52SPCh. 2 - Prob. 2.53SPCh. 2 - Examine Figure 2.2, A portion of Mendeleev’s...Ch. 2 - Prob. 2.55SPCh. 2 - Prob. 2.56SPCh. 2 - Prob. 2.57SPCh. 2 - Prob. 2.58SPCh. 2 - Prob. 2.59SPCh. 2 - Prob. 2.60SPCh. 2 - Prob. 2.61SPCh. 2 - Prob. 2.62SPCh. 2 - Prob. 2.63SPCh. 2 - 2.60 List several general properties of the...Ch. 2 - Prob. 2.65SPCh. 2 - Prob. 2.66SPCh. 2 - Prob. 2.67SPCh. 2 - At room temperature, a certain element is found to...Ch. 2 - Prob. 2.69SPCh. 2 - At room temperature, a certain element is yellow...Ch. 2 - Prob. 2.71SPCh. 2 - Prob. 2.72SPCh. 2 - Prob. 2.73SPCh. 2 - Prob. 2.74SPCh. 2 - Prob. 2.75SPCh. 2 - How does Dalton’s atomic theory account for the...Ch. 2 - Prob. 2.77SPCh. 2 - A sample of mercury with a mass of 114.0 g was...Ch. 2 - Prob. 2.79SPCh. 2 - In methane, one part hydrogen combine with three...Ch. 2 - In borane, one part hydrogen combine with 3.6...Ch. 2 - Benzene, ethane, and ethylene are just three of a...Ch. 2 - Prob. 2.83SPCh. 2 - Prob. 2.84SPCh. 2 - 2.79 In addition to carbon monoxide (CO) and...Ch. 2 - Prob. 2.86SPCh. 2 - What affects the magnitude of the deflection of...Ch. 2 - Prob. 2.88SPCh. 2 - Prob. 2.89SPCh. 2 - Which of the following charges is NOT possible for...Ch. 2 - What discovery about atomic structure was made...Ch. 2 - Prior to Rutherford’s gold foil experiment, the...Ch. 2 - A period at the end of sentence written with a...Ch. 2 - A 1/4 inch thick lead sheet is used for protection...Ch. 2 - Prob. 2.95SPCh. 2 - What is the difference between an atom’s atomic...Ch. 2 - Prob. 2.97SPCh. 2 - Prob. 2.98SPCh. 2 - Prob. 2.99SPCh. 2 - Prob. 2.100SPCh. 2 - The radioactive isotope cesium-137 was produced in...Ch. 2 - Prob. 2.102SPCh. 2 - Prob. 2.103SPCh. 2 - How many protons, neutrons, and electrons are in...Ch. 2 - Prob. 2.105SPCh. 2 - Prob. 2.106SPCh. 2 - Prob. 2.107SPCh. 2 - Prob. 2.108SPCh. 2 - Prob. 2.109SPCh. 2 - Fluorine occurs naturally as a single isotope. How...Ch. 2 - Hydrogen has three isotopes (1H,2H,and3H) , and...Ch. 2 - The unified atomic mass unit (u) is defined as...Ch. 2 - Prob. 2.113SPCh. 2 - Prob. 2.114SPCh. 2 - Label the following statements as true or false....Ch. 2 - Copper has two naturally occurring isotopes,...Ch. 2 - Sulfur has four naturally occurring isotopes,...Ch. 2 - aturally occurring boron consists of two isotopes:...Ch. 2 - Prob. 2.119SPCh. 2 - Magnesium has three naturally occurring isotopes:...Ch. 2 - A sample of naturally occurring silicon consists...Ch. 2 - Copper metal has two naturally occurring isotopes:...Ch. 2 - Germanium has five naturally occurring...Ch. 2 - What is the mass in grams of each of the following...Ch. 2 - How many moles are in each of the following...Ch. 2 - If the atomic weight of an element is x, what is...Ch. 2 - If the atomic weight of an element is x, what is...Ch. 2 - Prob. 2.128SPCh. 2 - If 4.611021 atoms of element Z have a mass of 0.8...Ch. 2 - Refer to Figure 2.10 showing a schematic...Ch. 2 - Copper has two naturally occurring isotopes,...Ch. 2 - Use the data from the mass spectrum of a sample of...Ch. 2 - Use the data from the mass spectrum of a sample of...Ch. 2 - Prob. 2.134SPCh. 2 - Which of the following bonds are likely to be...Ch. 2 - The symbol CO stands for carbon monoxide, but the...Ch. 2 - Prob. 2.137SPCh. 2 - Prob. 2.138SPCh. 2 - Prob. 2.139SPCh. 2 - Prob. 2.140SPCh. 2 - Prob. 2.141SPCh. 2 - Prob. 2.142SPCh. 2 - Prob. 2.143SPCh. 2 - Prob. 2.144SPCh. 2 - Prob. 2.145SPCh. 2 - Give systematic names for the following binary...Ch. 2 - Give systematic names for the following binary...Ch. 2 - Prob. 2.148SPCh. 2 - Prob. 2.149SPCh. 2 - Prob. 2.150SPCh. 2 - Prob. 2.151SPCh. 2 - Give systematic names for the following compounds:...Ch. 2 - Name the following ions: (a) Ba2+ (b) Cs+ (c) V3+...Ch. 2 - Prob. 2.154SPCh. 2 - Prob. 2.155SPCh. 2 - Prob. 2.156SPCh. 2 - Prob. 2.157SPCh. 2 - Prob. 2.158SPCh. 2 - Prob. 2.159SPCh. 2 - Prob. 2.160SPCh. 2 - Prob. 2.161SPCh. 2 - Prob. 2.162SPCh. 2 - Prob. 2.163SPCh. 2 - Prob. 2.164SPCh. 2 - Prob. 2.165SPCh. 2 - Ammonia (NH3) and hydrazine (N2H4) are both...Ch. 2 - If 3.670 g of nitrogen combines with 0.5275 g of...Ch. 2 - Prior to 1961, the atomic mass unit (amu) was...Ch. 2 - What was the mass ¡n atomic mass units of a 40Ca...Ch. 2 - Prob. 2.170MPCh. 2 - The mass percent of an element in a compound is...Ch. 2 - In an alternate universe, the smallest negatively...
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