CHEMISTRY:CENTRAL SCI.AP(NASTA)-W/WKBK.
13th Edition
ISBN: 9780133582543
Author: Brown
Publisher: PEARSON
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Chapter 21, Problem 64E
(a) Do colloids made only of gases exist? Why or Why not? (b) In the 1850s, Michael Faraday prepared ruby-red colloids of gold nanoparticles in water that are still stable today. These brightly colored colloids look like solutions. What experiment’s could you do to determine whether a given colored preparation is a solution or colloid?
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Chapter 21 Solutions
CHEMISTRY:CENTRAL SCI.AP(NASTA)-W/WKBK.
Ch. 21.1 - Prob. 21.1.1PECh. 21.1 - Prob. 21.1.2PECh. 21.1 - Prob. 21.2.1PECh. 21.1 - Prob. 21.2.2PECh. 21.2 - Which aqueous solution will have the lowest...Ch. 21.2 - Prob. 21.3.2PECh. 21.3 - Prob. 21.4.1PECh. 21.3 - Prob. 21.4.2PECh. 21.4 - Prob. 21.5.1PECh. 21.4 - Practice Exercise 2
Camphor (C10 H16 O) melts at...
Ch. 21.4 - Prob. 21.6.1PECh. 21.4 - Prob. 21.6.2PECh. 21.4 - Prob. 21.7.1PECh. 21.4 - Rank the contents of the following containers in...Ch. 21.6 - Prob. 21.8.1PECh. 21.6 - Consider two ionic solids, both composed of singly...Ch. 21 - Prob. 1DECh. 21 - Would you expect stearic acid, CH3 (CH2)16COOH, to...Ch. 21 - 13.43 Calculate the morality of the following...Ch. 21 - Commercial aqueous nitric acid has a density of...Ch. 21 - Prob. 4ECh. 21 - Prob. 5ECh. 21 - Prob. 6ECh. 21 - Prob. 7ECh. 21 - If the experiment in Figure 14.2 is run for 60 s,...Ch. 21 - Prob. 9ECh. 21 - Indicate the principal type of solute-solvent...Ch. 21 - When ammonium chloride dissolves in water, the...Ch. 21 - Prob. 12ECh. 21 - KBr is relatively soluble in water, yet its...Ch. 21 - The solubility of MnSO4 . H2 O in water at 20 C is...Ch. 21 - Prob. 15ECh. 21 - Prob. 16ECh. 21 - Prob. 17ECh. 21 - Prob. 18ECh. 21 - Prob. 19ECh. 21 - Prob. 20ECh. 21 - Prob. 21ECh. 21 - Indicate whether each statement is true or false:...Ch. 21 - 13.36 Indicate whether each statement is true or...Ch. 21 - Prob. 24ECh. 21 - Prob. 25ECh. 21 - Prob. 26ECh. 21 - Prob. 27ECh. 21 - Prob. 28ECh. 21 - Prob. 29ECh. 21 - Calculate the molality of each of the following...Ch. 21 - (a) What is the molality of a solution formed by...Ch. 21 - Prob. 32ECh. 21 - Prob. 33ECh. 21 - Prob. 34ECh. 21 - The density of toluene (C7H8) is 0.867 g\mL, and...Ch. 21 - Calculate the number of moles of solute present in...Ch. 21 - Prob. 37ECh. 21 - Prob. 38ECh. 21 - Describe how you would prepare each of the...Ch. 21 - Prob. 40ECh. 21 - Prob. 41ECh. 21 - Prob. 42ECh. 21 - Prob. 43ECh. 21 - Prob. 44ECh. 21 - Prob. 45ECh. 21 - Prob. 46ECh. 21 - Prob. 47ECh. 21 - Prob. 48ECh. 21 - (a) Calculate the vapor pressure of water above a...Ch. 21 - Prob. 50ECh. 21 - Prob. 51ECh. 21 - Prob. 52ECh. 21 - Prob. 53ECh. 21 - Using data from Table 13.3, calculate the freezing...Ch. 21 - Prob. 55ECh. 21 - Prob. 56ECh. 21 - Prob. 57ECh. 21 - Prob. 58ECh. 21 - Prob. 59ECh. 21 - Prob. 60ECh. 21 - Prob. 61ECh. 21 - The osmotic pressure of a 0.010 M aqueous solution...Ch. 21 - Prob. 63ECh. 21 - (a) Do colloids made only of gases exist? Why or...Ch. 21 - Prob. 65ECh. 21 - An “emulsifying agent” is a compound that helps...Ch. 21 - Aerosols are important components of the...Ch. 21 - Prob. 68ECh. 21 - Soaps consist of compounds such as sodium state,...Ch. 21 - Most fish need at least 4 ppm dissolved O2 in...Ch. 21 - The presence of the radioactive gas radon (Rn) in...Ch. 21 - Prob. 72AECh. 21 - Prob. 73AECh. 21 - The maximum allowable concentration of lead in...Ch. 21 - Prob. 75AECh. 21 - Prob. 76AECh. 21 - Prob. 77AECh. 21 - Prob. 78AECh. 21 - The normal boiling point of ethanol, is 78.4 0C....Ch. 21 - Prob. 80AECh. 21 - Prob. 81AECh. 21 - Prob. 82AECh. 21 - Prob. 83AECh. 21 - Prob. 84AECh. 21 - Prob. 85AECh. 21 - Prob. 86AECh. 21 - Prob. 87AECh. 21 - Prob. 88AECh. 21 - Prob. 89IECh. 21 - Prob. 90IECh. 21 - Prob. 91IECh. 21 - Prob. 92IECh. 21 - Prob. 93IECh. 21 - Prob. 94IE
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- The dispersed phase of a certain colloidal dispersion consists of spheres of diameter 1.0 102 nm. (a) What are the volume (V=43r2) and surface area (A = r2) of each sphere? (b) How many spheres are required to give a total volume of 1.0 cm3? What is the total surface area of these spheres in square meters?arrow_forward6-111 As noted in Section 6-8C, the amount of external pressure that must be applied to a more concentrated solution to stop the passage of solvent molecules across a semipermeable membrane is known as the osmotic pressure The osmotic pressure obeys a law similar in form to the ideal gas law (discussed in Section 5-4), where Substituting for pressure and solving for osmotic pressures gives the following equation: RT MRT, where M is the concentration or molarity of the solution. (a) Determine the osmotic pressure at 25°C of a 0.0020 M sucrose (C12H22O11) solution. (b) Seawater contains 3.4 g of salts for every liter of solution. Assuming the solute consists entirely of NaCl (and complete dissociation of the NaCI salt), calculate the osmotic pressure of seawater at 25°C. (c) The average osmotic pressure of blood is 7.7 atm at 25°C. What concentration of glucose (C6H12O6) will be isotonic with blood? (d) Lysozyme is an enzyme that breaks bacterial cell walls. A solution containing 0.150 g of this enzyme in 210. mL of solution has an osmotic pressure of 0.953 torr at 25°C. What is the molar mass of lysozyme? (e) The osmotic pressure of an aqueous solution of a certain protein was measured in order to determine the protein's molar mass. The solution contained 3.50 mg of protein dissolved in sufficient water to form 5.00 mL of solution. The osmotic pressure of the solution at 25°C was found to be 1.54 torr. Calculate the molar mass of the protein.arrow_forwardHow do colloids differ from solutions with regard to dispersed particle size and homogeneity?arrow_forward
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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