Bundle: Introduction to General, Organic and Biochemistry, 11th + OWLv2, 4 terms (24 months) Printed Access Card
11th Edition
ISBN: 9781305705159
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
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Chapter 13, Problem 13.12P
13-12 One analogy often used to explain the concept of a resonance hybrid is to relate a rhinoceros to a unicorn and a dragon. Explain the reasoning in this analogy and how it might relate to a resonance hybrid.
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In the video, we looked at the absorbance of a certain substance and how it varies
depending on what wavelength of light we are looking at. Below is a similar scan of a
different substance. What color BEST describes how this substance will appear?
Absorbance (AU)
Violet
Blue
Green
Orange
1.2
1.0-
0.8-
0.6-
0.4-
0.2
0.0
450
500
550
600
650
700
Wavelength (nm)
violet
indigo
blue
green
yellow orange
red
Red
O Cannot tell from this information
In the above graph, what causes -450 nm wavelength of light to have a higher
absorbance than light with a -550 nm wavelength? Check all that are true.
The distance the light travels is different
The different data points are for different substances
The concentration is different at different times in the experiment
Epsilon (molar absortivity) is different at different wavelengths
5. a. Data were collected for Trial 1 to determine the molar mass of a nonvolatile solid solute when dissolved in cyclo-
hexane. Complete the table for the analysis (See Report Sheet). Record calculated values with the correct number
of significant figures.
B. Freezing Point of Cyclohexane plus
Calculation Zone
Unknown Solute
2. Mass of cyclohexane (g)
10.14
Part C.4
3. Mass of added solute (g)
0.255
C. Calculations
1. k; for cyclohexane (°C⚫ kg/mol)
20.0
2. Freezing point change, AT, (°C)
3.04
Part C.6
3. Mass of cyclohexane in solution (kg)
4. Moles of solute, total (mol)
Show calculation.
5. Mass of solute in solution, total (g)
6. Molar mass of solute (g/mol)
Show calculation.
Chapter 13 Solutions
Bundle: Introduction to General, Organic and Biochemistry, 11th + OWLv2, 4 terms (24 months) Printed Access Card
Ch. 13.2 - Prob. 13.1PCh. 13 - Answer true or false. Alkenes, alkynes, and arenes...Ch. 13 - 13-3 What is the difference in structure between a...Ch. 13 - 13-4 Define aromatic compound.Ch. 13 - 13-5 Why are alkenes, alkynes, and aromatic...Ch. 13 - 13-B Do aromatic rings have double bonds? Are they...Ch. 13 - 13-7 Can an aromatic compound be a saturated...Ch. 13 - Draw at least two structural formulas for each of...Ch. 13 - 13-9 Write a structural formula and the name for...Ch. 13 - 13-10 Account for the fact that the six-membered...
Ch. 13 - 13-11 Explain why the compound 1,4-dichlorobenzene...Ch. 13 - 13-12 One analogy often used to explain the...Ch. 13 - 13-13 Answer true or false. A phenyl group has the...Ch. 13 - Prob. 13.14PCh. 13 - 13-15 Draw structural formulas for these compounds...Ch. 13 - 13-16 We say that naphthalene, anthracene,...Ch. 13 - 13-17 Following is the structural formula of...Ch. 13 - 13-18 Answer true or false. Benzene does not...Ch. 13 - 13-19 Suppose you have unlabeled bottles of...Ch. 13 - 13-20 Three products with the molecular formula...Ch. 13 - 13-21 The reaction of bromine with toluene in the...Ch. 13 - 13-22 What reagents and/or catalysts are necessary...Ch. 13 - 13-23 What reagents and/or catalysts are necessary...Ch. 13 - Prob. 13.24PCh. 13 - 13-25 Answer true or false. (a) Phenols and...Ch. 13 - 13-26 Both phenol and cyclohexanol are only...Ch. 13 - 13-27 Define autoxidation.Ch. 13 - 13*28 Autoxidation is described as a radical-chain...Ch. 13 - 13-29 Show that if you add Steps 2a and 2b of the...Ch. 13 - 13-30 How does vitamin E function as an...Ch. 13 - 13-31 What structural features are common to...Ch. 13 - 13*32 Black-and-white photography is a commercial...Ch. 13 - 13-33 Following is the structural formula of...Ch. 13 - 13-34 (Chemical Connections 13A) From what parts...Ch. 13 - Prob. 13.35PCh. 13 - 13-36 (Chemical Connections 13A, Would you expect...Ch. 13 - Prob. 13.37PCh. 13 - 13-38 (Chemical Connections 13A) What is meant by...Ch. 13 - 13-39 (Chemical Connections 13B) What is a...Ch. 13 - 13-40 (Chemical Connections 130 In the absence of...Ch. 13 - Prob. 13.41PCh. 13 - 13-42 (Chemical Connections 13E) What are the...Ch. 13 - 13-43 (Chemical Connections 13E) Which features of...Ch. 13 - 13-44 (Chemical Connections 13E) What color would...Ch. 13 - Prob. 13.45PCh. 13 - Prob. 13.46PCh. 13 - Prob. 13.47PCh. 13 - 13-48 (Chemical Connections 13F, How many...Ch. 13 - 13-49 (Chemical Connections 13F) In what ways is...Ch. 13 - 13*50 The structure for naphthalene given in...Ch. 13 - 13-51 Draw structural formulas for these...Ch. 13 - 13-52 2,6-Di-/ezY-butyl-4-methylphenol (BHT,...Ch. 13 - 13-53 Write the structural formula for the product...Ch. 13 - 13-54 Styrene reacts with bromine to give a...Ch. 13 - 13-55 When toluene is treated with Br, in the...Ch. 13 - 13-56 Four alternatives to the structure of...Ch. 13 - 13-57 Benzene, as we have seen in this chapter, is...
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