Chemistry Principles And Practice
3rd Edition
ISBN: 9781305295803
Author: David Reger; Scott Ball; Daniel Goode
Publisher: Cengage Learning
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Textbook Question
Chapter 12, Problem 12.50QE
The solubility of ethylene (C2H4) in water at 20 °C and 0.300 atm pressure is 1.27 × 10−4 molal.
- (a) Calculate the Henry’s law constant for this gas in units of molal/torr.
- (b) How many grams of ethylene are dissolved in 1.00 kg water at 20 °C if the pressure of the gas is 500 torr?
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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 12 Solutions
Chemistry Principles And Practice
Ch. 12 - Prob. 12.1QECh. 12 - Prob. 12.2QECh. 12 - Prob. 12.3QECh. 12 - Prob. 12.4QECh. 12 - Prob. 12.5QECh. 12 - Prob. 12.6QECh. 12 - Prob. 12.7QECh. 12 - Prob. 12.8QECh. 12 - Prob. 12.9QECh. 12 - Prob. 12.10QE
Ch. 12 - Prob. 12.11QECh. 12 - Prob. 12.12QECh. 12 - Create a flow diagram, similar to those used in...Ch. 12 - Prob. 12.14QECh. 12 - Prob. 12.15QECh. 12 - Prob. 12.16QECh. 12 - Prob. 12.17QECh. 12 - Prob. 12.18QECh. 12 - Prob. 12.19QECh. 12 - Prob. 12.20QECh. 12 - Prob. 12.21QECh. 12 - Prob. 12.22QECh. 12 - Prob. 12.23QECh. 12 - Prob. 12.24QECh. 12 - Prob. 12.25QECh. 12 - Prob. 12.26QECh. 12 - Prob. 12.27QECh. 12 - What is the molality of copper(II) bromide (CuBr2)...Ch. 12 - Prob. 12.29QECh. 12 - Prob. 12.30QECh. 12 - A water solution of sodium hypochlorite (NaOCl) is...Ch. 12 - Prob. 12.32QECh. 12 - Prob. 12.33QECh. 12 - Vinegar is a 5.0% solution of acetic acid...Ch. 12 - Prob. 12.35QECh. 12 - A 2.77 M NaOH solution in water has a density of...Ch. 12 - The density of a 3.75 M aqueous sulfuric acid...Ch. 12 - Prob. 12.40QECh. 12 - Prob. 12.41QECh. 12 - Prob. 12.42QECh. 12 - Predict the relative solubility of each compound...Ch. 12 - Predict the relative solubility of each compound...Ch. 12 - Prob. 12.45QECh. 12 - Prob. 12.46QECh. 12 - Prob. 12.47QECh. 12 - Prob. 12.48QECh. 12 - Prob. 12.49QECh. 12 - The solubility of ethylene (C2H4) in water at 20 C...Ch. 12 - Prob. 12.51QECh. 12 - Prob. 12.52QECh. 12 - Prob. 12.53QECh. 12 - Prob. 12.54QECh. 12 - Prob. 12.55QECh. 12 - Prob. 12.56QECh. 12 - From the data presented in Figure 12.11, determine...Ch. 12 - Prob. 12.58QECh. 12 - Prob. 12.59QECh. 12 - Prob. 12.60QECh. 12 - Prob. 12.61QECh. 12 - Prob. 12.62QECh. 12 - The vapor pressure of chloroform (CHCl3) is 360...Ch. 12 - Prob. 12.64QECh. 12 - Prob. 12.65QECh. 12 - Prob. 12.66QECh. 12 - Prob. 12.67QECh. 12 - Prob. 12.68QECh. 12 - Prob. 12.69QECh. 12 - Prob. 12.70QECh. 12 - A solution of 1.00 g of a protein in 20.0 mL water...Ch. 12 - Prob. 12.72QECh. 12 - Arrange the following aqueous solutions in order...Ch. 12 - Arrange the following solutions in order of...Ch. 12 - Prob. 12.75QECh. 12 - An aqueous solution of sodium bromide freezes at...Ch. 12 - Prob. 12.77QECh. 12 - Prob. 12.78QECh. 12 - Prob. 12.79QECh. 12 - Prob. 12.80QECh. 12 - A 0.029 M solution of potassium sulfate has an...Ch. 12 - The freezing point of a 0.031-m solution of...Ch. 12 - Prob. 12.83QECh. 12 - Prob. 12.84QECh. 12 - Prob. 12.85QECh. 12 - Prob. 12.86QECh. 12 - Prob. 12.87QECh. 12 - Prob. 12.88QECh. 12 - Prob. 12.89QECh. 12 - Prob. 12.90QECh. 12 - Predict the relative solubility of each compound...Ch. 12 - Prob. 12.92QECh. 12 - Prob. 12.94QECh. 12 - Prob. 12.95QECh. 12 - Prob. 12.96QECh. 12 - Sketch graphs of total vapor pressure versus the...Ch. 12 - Prob. 12.98QECh. 12 - Prob. 12.99QECh. 12 - Prob. 12.100QECh. 12 - Prob. 12.101QECh. 12 - Prob. 12.102QECh. 12 - Prob. 12.103QECh. 12 - A 10.00-mL sample of a 24.00% solution of ammonium...Ch. 12 - Prob. 12.105QECh. 12 - In the 1986 Lake Nyos disaster (see the chapter...Ch. 12 - Prob. 12.107QE
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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