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EBK CHEMISTRY:CENTRAL SCIENCE
14th Edition
ISBN: 9780134554570
Author: Brown
Publisher: PEARSON
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Textbook Question
Chapter 13, Problem 87E
An “emulsifying agent” is a compound that helps stabilize a hydrophobic colloid in a hydrophilic solvent (or a hydrophilic colloid in a hydrophobic solvent). Which of the following choices is the best emulsifying agent? (a) CH3COOH, (b) CH3CH2CH2COOH, (c) CH3(CH2)11
COOH, (d)CH3 (CH2)11COONa.
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Students have asked these similar questions
(6 pts - 2 pts each part) Although we focused our discussion on hydrogen light emission, all
elements have distinctive emission spectra. Sodium (Na) is famous for its spectrum being
dominated by two yellow emission lines at 589.0 and 589.6 nm, respectively. These lines result
from electrons relaxing to the 3s subshell.
a. What is the photon energy (in J) for one of these emission lines? Show your work.
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answer-you shouldn't need to do numerical calculations.
c. Consider the 3s subshell energy for Na - use 0 eV as the reference point for n=∞. What
is the energy of the subshell that the electron relaxes from? Choose the same emission
line that you did for part (a) and show your work.
None
(9 Pts) In one of the two Rare Earth element rows of the periodic table, identify an exception to
the general ionization energy (IE) trend. For the two elements involved, answer the following
questions. Be sure to cite sources for all physical data that you use.
a. (2 pts) Identify the two elements and write their electronic configurations.
b. (2 pts) Based on their configurations, propose a reason for the IE trend exception.
c. (5 pts) Calculate effective nuclear charges for the last electron in each element and the
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explain the IE trend exception? Explain how (not) - include a description of how IE
relates to electronegativity.
Chapter 13 Solutions
EBK CHEMISTRY:CENTRAL SCIENCE
Ch. 13.3 - Prob. 13.1.1PECh. 13.3 - Prob. 13.1.2PECh. 13.3 - Prob. 13.2.1PECh. 13.3 - Prob. 13.2.2PECh. 13.4 - Prob. 13.3.1PECh. 13.4 - Prob. 13.3.2PECh. 13.4 - Prob. 13.4.1PECh. 13.4 - Prob. 13.4.2PECh. 13.4 - Prob. 13.5.1PECh. 13.4 - Prob. 13.5.2PE
Ch. 13.4 - Prob. 13.6.1PECh. 13.4 - Prob. 13.6.2PECh. 13.5 - Prob. 13.7.1PECh. 13.5 - Prob. 13.7.2PECh. 13.5 - Which aqueous solution will have the lowest...Ch. 13.5 - Prob. 13.8.2PECh. 13.5 - Prob. 13.9.1PECh. 13.5 - Prob. 13.9.2PECh. 13.5 - Prob. 13.10.1PECh. 13.5 - Practice Exercise 2
Camphor (C10 H16 O) melts at...Ch. 13.5 - Prob. 13.11.1PECh. 13.5 - Prob. 13.11.2PECh. 13 - Prob. 1DECh. 13 - Rank the contents of the following containers in...Ch. 13 - This figure shows the interaction of a cation with...Ch. 13 - Consider two ionic solids, both composed of singly...Ch. 13 - Which two statements about gas mixtures are true?...Ch. 13 - Prob. 5ECh. 13 - 13.6 If you compare the solubilities of the noble...Ch. 13 - Prob. 7ECh. 13 - Prob. 8ECh. 13 - Prob. 9ECh. 13 - Prob. 10ECh. 13 - Suppose you had a balloon made of some highly...Ch. 13 - Prob. 12ECh. 13 - Indicate whether each statement is true or false:...Ch. 13 - Indicate whether each statement is true or false:...Ch. 13 - Indicate the type of solute-solvent interaction...Ch. 13 - Indicate the principal type of solute-solvent...Ch. 13 - An ionic compound has a very negative H soln in...Ch. 13 - When ammonium chloride dissolves in water, the...Ch. 13 - Prob. 19ECh. 13 - Prob. 20ECh. 13 - Prob. 21ECh. 13 - KBr is relatively soluble in water, yet its...Ch. 13 - The solubility of Cr (NO3)3 . 9 H2O in water is...Ch. 13 - The solubility of MnSO4 . H2 O in water at 20 C is...Ch. 13 - Prob. 25ECh. 13 - Prob. 26ECh. 13 - Prob. 27ECh. 13 - Prob. 28ECh. 13 - Prob. 29ECh. 13 - Prob. 30ECh. 13 - Would you expect stearic acid, CH3 (CH2)16COOH, to...Ch. 13 - Prob. 32ECh. 13 - Prob. 33ECh. 13 - Prob. 34ECh. 13 - Indicate whether each statement is true or false:...Ch. 13 - 13.36 Indicate whether each statement is true or...Ch. 13 - The Henry’s law constant for helium gas in water...Ch. 13 - Prob. 38ECh. 13 - Prob. 39ECh. 13 - Prob. 40ECh. 13 - Prob. 41ECh. 13 - Prob. 42ECh. 13 - 13.43 Calculate the morality of the following...Ch. 13 - Prob. 44ECh. 13 - Calculate the molality of each of the following...Ch. 13 - (a) What is the molality of a solution formed by...Ch. 13 - Prob. 47ECh. 13 - Prob. 48ECh. 13 - Prob. 49ECh. 13 - The density of toluene (C7H8) is 0.867 g\mL, and...Ch. 13 - Calculate the number of moles of solute present in...Ch. 13 - Calculate the number of moles of solute present in...Ch. 13 - Prob. 53ECh. 13 - Describe how you would prepare each of the...Ch. 13 - Commercial aqueous nitric acid has a density of...Ch. 13 - Prob. 56ECh. 13 - Prob. 57ECh. 13 - Prob. 58ECh. 13 - Prob. 59ECh. 13 - Prob. 60ECh. 13 - Prob. 61ECh. 13 - Prob. 62ECh. 13 - Consider two solutions, one formed by adding 10 g...Ch. 13 - Prob. 64ECh. 13 - Prob. 65ECh. 13 - (a) Calculate the vapor pressure of water above a...Ch. 13 - Prob. 67ECh. 13 - At 20 oC, the vapor pressure of benzene (C6 H6) is...Ch. 13 - Prob. 69ECh. 13 - Prob. 70ECh. 13 - Prob. 71ECh. 13 - Prob. 72ECh. 13 - Using data from Table 13.3, calculate the freezing...Ch. 13 - Prob. 74ECh. 13 - Prob. 75ECh. 13 - Prob. 76ECh. 13 - Prob. 77ECh. 13 - Prob. 78ECh. 13 - Prob. 79ECh. 13 - Lauryl alcohol is obtained from coconut oil and is...Ch. 13 - Prob. 81ECh. 13 - Prob. 82ECh. 13 - The osmotic pressure of a 0.010 M aqueous solution...Ch. 13 - Based on the given data in Table 13.4, which...Ch. 13 - (a) Do colloids made only of gases exist? Why or...Ch. 13 - Prob. 86ECh. 13 - An “emulsifying agent” is a compound that helps...Ch. 13 - Aerosols are important components of the...Ch. 13 - Prob. 89ECh. 13 - Soaps consist of compounds such as sodium state,...Ch. 13 - Prob. 91AECh. 13 - Prob. 92AECh. 13 - Most fish need at least 4 ppm dissolved O2 in...Ch. 13 - The presence of the radioactive gas radon (Rn) in...Ch. 13 - Prob. 95AECh. 13 - Prob. 96AECh. 13 - The maximum allowable concentration of lead in...Ch. 13 - Prob. 98AECh. 13 - Prob. 99AECh. 13 - Prob. 100AECh. 13 - Prob. 101AECh. 13 - The normal boiling point of ethanol, is 78.4 0C....Ch. 13 - Prob. 103AECh. 13 - Carbon disulfide (CS2) boils at 46.30 o C and has...Ch. 13 - Prob. 105AECh. 13 - Prob. 106IECh. 13 - At ordinary body temperature (37 o C), the...Ch. 13 - Prob. 108IECh. 13 - Prob. 109IECh. 13 - Prob. 110IECh. 13 - Prob. 111IECh. 13 - Prob. 112IECh. 13 - At 35 o C the vapor pressure of acetone, (CH3)2CO,...Ch. 13 - Prob. 114IE
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Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY