Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN: 9781938168390
Author: Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher: OpenStax
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Chapter 3, Problem 68E
The US Environmental Protection Agency (EPA) places limits on the quantities of toxic substances that may be discharged into the sewer system. Limits have been established for a variety of substances, including hexavalent chromium, which is limited to 0.50 mg/L. If an industry is discharging hexavalent chromium as potassium dichromate
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3. Two solutions are prepared using the same solute:
Solution A: 0.14 g of the solute dissolves in 15.4 g of t-butanol
Solution B: 0.17 g of the solute dissolves in 12.7 g of cyclohexane
Which solution has the greatest freezing point change? Show calculations and explain.
2. Give the ground state electron configuration (e.g., 02s² σ*2s² П 2p²) for these molecules and deduce
its bond order.
Ground State Configuration
Bond Order
H2+
02-
N2
1. This experiment is more about understanding the colligative properties of a solution rather than the determination of
the molar mass of a solid.
a. Define colligative properties.
b. Which of the following solutes has the greatest effect on the colligative properties for a given mass of pure water?
Explain.
(i) 0.01 mol of CaCl2
(ii) 0.01 mol of KNO3
(iii) 0.01 mol of CO(NH2)2
(an electrolyte)
(an electrolyte)
(a nonelectrolyte)
Chapter 3 Solutions
Chemistry by OpenStax (2015-05-04)
Ch. 3 - What is the total mass (amu) of carbon in each of...Ch. 3 - What is the total mass of hydrogen in each of the...Ch. 3 - Calculate the molecular or formula mass of each of...Ch. 3 - Determine the molecular mass of the following...Ch. 3 - Determine the molecular mass of the following...Ch. 3 - Which molecule has a molecular mass of 28.05 amu?Ch. 3 - Write a sentence that describes how to determine...Ch. 3 - Compare 1 mole of H2, 1 mole of O2, and 1 mole of...Ch. 3 - Which contains the greatest mass of oxygen: 0.75...Ch. 3 - Which contains the greatest number of moles of...
Ch. 3 - How are the molecular mass and the molar mass of a...Ch. 3 - Calculate the molar mass of each of the following...Ch. 3 - Calculate the molar mass of each of the following:...Ch. 3 - Calculate the empirical or molecular formula mass...Ch. 3 - Calculate the molar mass of each of the following:...Ch. 3 - Determine the number of moles of compound and the...Ch. 3 - Determine the mass of each of the following: 0.0...Ch. 3 - Determine the number of moles of the compound and...Ch. 3 - Determine the mass of each of the following: 2.345...Ch. 3 - The approximate minimum daily dietary requirement...Ch. 3 - Determine the mass in grams of each of the...Ch. 3 - A 55-kg woman has 7.5103 mol of hemoglobin (molar...Ch. 3 - Determine the number of atoms and the mass of...Ch. 3 - Determine which of the following contains the...Ch. 3 - Determine which of the following contains the...Ch. 3 - Diamond is one form of elemental carbon. An...Ch. 3 - The Cullinan diamond was the largest natural...Ch. 3 - One 55-gram serving of a particular cereal...Ch. 3 - A certain nut crunch cereal contains 11.0 grams of...Ch. 3 - A tube of toothpaste contains 0.76 g of sodium...Ch. 3 - Which of the following represents the least number...Ch. 3 - What information do we need to determine the...Ch. 3 - Calculate the following to four significant...Ch. 3 - Determine the following to four significant...Ch. 3 - Determine the percent ammonia, NH3, in Co(...Ch. 3 - Determine the percent water in CuSO45H2O to three...Ch. 3 - Determine the empirical formulas for compounds...Ch. 3 - Determine the empirical formulas for compounds...Ch. 3 - A compound of carbon and hydrogen contains 92.3% C...Ch. 3 - Dichioroethane, a compound that is often used for...Ch. 3 - Determine the empirical and molecular formula for...Ch. 3 - Polymers are large molecules composed of simple...Ch. 3 - A major textile dye manufacturer developed a new...Ch. 3 - Explain what changes and what stays the same when...Ch. 3 - What information do we need to calculate the...Ch. 3 - What does it mean when we say that a 200-mL sample...Ch. 3 - Determine the molarity for each of the following...Ch. 3 - Determine the molarity of each of the following...Ch. 3 - Consider this question: What is the mass of the...Ch. 3 - Consider this question: What is the mass of solute...Ch. 3 - Calculate the number of moles and the mass of the...Ch. 3 - Calculate the number of moles and the mass of the...Ch. 3 - Consider this question: What is the molarity of...Ch. 3 - Consider this question: What is the molarity of...Ch. 3 - Calculate the molarity of each of the following...Ch. 3 - Calculate the molarity of each of the following...Ch. 3 - There is about 1.0 g of calcium, as Ca2+, in LO L...Ch. 3 - What volume of a 1.00MFe( NO3)3 solution can be...Ch. 3 - If 0.1718 L of a 0.3556-M C3H7OH solution is...Ch. 3 - If 4.12 L of a 0.850 MH3PO4 solution is be diluted...Ch. 3 - What volume of a 0.33MC12H22O11 solution can be...Ch. 3 - What is the concentration of the NaCl solution...Ch. 3 - What is the molarity of the diluted solution when...Ch. 3 - What is the final concentration of the solution...Ch. 3 - A 2.00-L bottle of a solution of concentrated HCl...Ch. 3 - An experiment in a general chemistry laboratory...Ch. 3 - What volume of a 0.20MK2SO4 solution contains 57 g...Ch. 3 - The US Environmental Protection Agency (EPA)...Ch. 3 - Consider this question: What mass of a...Ch. 3 - What mass of a 4.00% NaOH solution by mass...Ch. 3 - What mass of solid NaOH (97.0% NaOH by mass) is...Ch. 3 - What mass of HCl is contained in 45.0 mL of an...Ch. 3 - The hardness of water (hardness count) is usually...Ch. 3 - The hardness of water (hardness count) is usually...Ch. 3 - In Canada and the United Kingdom, devices that...Ch. 3 - A throat spray is 1.40% by mass phenol, C6H5OH, in...Ch. 3 - Copper(I) iodide (CuI) is often added to table...Ch. 3 - A cough syrup contains 5.0% ethyl alcohol, C2H5OH,...Ch. 3 - D5W is a solution used as an intravenous fluid. It...Ch. 3 - Find the molarity of a 40.0% by mass aqueous...
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