LCPO CHEMISTRY W/MODIFIED MASTERING
8th Edition
ISBN: 9780135214756
Author: Robinson
Publisher: PEARSON
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Chapter 2, Problem 2.13P
Use the data from the mass spectrum of asample of an element to calculate the element’s atomic weight.Identify the clement.
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Complete the following table. The only density needed is already given. Show your
calculations in a neat and easy-to-follow manner in the space below the table. All units
should be included and significant figures should be given close attention. Be sure to notice
that the amount of material should be in millimoles rather than moles, and the theoretical
mass of the product should in milligrams rather than grams.
LOCH 3
+
H2SO4
HNO 3
O=C-OCH 3
NO2
x
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F.W.
4.0 mL 1.3 M
amount
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Kumada Coupling:
1. m-Diisobutylbenzene below could hypothetically be synthesized by Friedel-Crafts reaction. Write out the reaction with a
mechanism and give two reasons why you would NOT get the desired product.
Draw the reaction (NOT a mechanism) for a Kumada coupling to produce the molecule above from m-dichlorobenzene.
Calculate the theoretical yield for the reaction in question 2 using 1.5 g of p-dichlorobenzene and 3.0 mL isobutyl bromide.
What signals appeared/disappeared/shifted that indicate that you have your intended product and not starting material? What
other impurities are present in your product and how do you know?
Wintergreen from Aspirin:
1. In isolating the salicylic acid, why is it important to press out as much of the water as possible?
2. Write the mechanism of the esterification reaction you did.
3.
What characteristic absorption band changes would you expect in the IR spectrum on going from aspirin to salicyclic acid and
then to methyl salicylate as you did in the experiment today? Give approximate wavenumbers associated with each functional
group change.
What signals appeared/disappeared/shifted that indicate that you have your intended product and not starting material? What
other impurities are present in your product and how do you know?
Chapter 2 Solutions
LCPO CHEMISTRY W/MODIFIED MASTERING
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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