Chemistry Atoms First2e
2nd Edition
ISBN: 9781947172647
Author: OpenStax
Publisher: OpenStax College
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Chapter 11, Problem 39E
Calculate the molality of each of the following solutions:
(a) 0.710 kg of sodium carbonate (washing soda), Na2CO3, in 10.0 kg of water—a saturated solution at 0°C
(b) 125 g of NH4NO3 in 275 g of water—a mixture used to make an instant ice pack
(c) 25 g of CI2 in 125 g of dichloromethane, CH2CI2
(d) 0.372 g of tetrahydropyridine, C5H9N, in 125 g of chloroform, CHCI3
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CHEM2323
Problem 2-24
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(b)
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Chapter 11 Solutions
Chemistry Atoms First2e
Ch. 11 - How do solutions differ from compounds? From other...Ch. 11 - Which of the principal characteristics of...Ch. 11 - When KNO3 is dissolved in water, the resulting...Ch. 11 - Give an example of each of the following types of...Ch. 11 - Indicate the most important types of...Ch. 11 - Predict whether each of the following substances...Ch. 11 - Heat is released when some solutions form; heat is...Ch. 11 - Solutions of hydrogen in palladium may be formed...Ch. 11 - Explain why the ions Na+ and CI- are strongly...Ch. 11 - Explain why solutions of HBr in benzene (a...
Ch. 11 - Consider the solutions presented: (a) Which of the...Ch. 11 - Compare the processes that occur when methanol...Ch. 11 - What is the expected electrical conductivity of...Ch. 11 - Why are most solid ionic compounds electrically...Ch. 11 - Indicate the most important type of intermolecular...Ch. 11 - Suppose you are presented with a clear solution of...Ch. 11 - Supersaturated solutions of most solids in water...Ch. 11 - Suggest an explanation for the observations that...Ch. 11 - Calculate the percent by mass of KBr in a...Ch. 11 - Which of the following gases is expected to be...Ch. 11 - At 0 C and 1.00 atm, as much as 0.70 g of O2 can...Ch. 11 - Refer to Figure 11.10. (a) How did the...Ch. 11 - The Henrys law constant for CO2 is 3.4102 M/atm at...Ch. 11 - The Henrys law constant for O2 is 1.3103 M/ atm at...Ch. 11 - Assuming ideal solution behavior, how many liters...Ch. 11 - Which is are part of the macroscopic domain of...Ch. 11 - What is the microscopic explanation for the...Ch. 11 - Sketch a qualitative graph of the pressure versus...Ch. 11 - A solution of potassium nitrate, an electrolyte,...Ch. 11 - What are the mole fractions of H3PO4 and water in...Ch. 11 - What are the mole fractions of HNO3 and water in a...Ch. 11 - Calculate the mole fraction of each solute and...Ch. 11 - Calculate the mole fraction of each solute and...Ch. 11 - Calculate the mole fractions of methanol, CH3OH;...Ch. 11 - What is the difference between a 1 M solution and...Ch. 11 - What is the molality of phosphoric acid, H3PO4, in...Ch. 11 - What is the molality of nitric acid in a...Ch. 11 - Calculate the molality of each of the following...Ch. 11 - Calculate the molality of each of the following...Ch. 11 - The concentration of glucose, C6H12O6, in normal...Ch. 11 - A 13.0% solution of K2CO3 by mass has a density of...Ch. 11 - Why does 1 mol of sodium chloride depress the...Ch. 11 - Assuming ideal solution behavior what is the...Ch. 11 - Assuming ideal solution behavior, what is the...Ch. 11 - Assuming ideal solution behavior, what is the...Ch. 11 - Assuming ideal solution behavior, what is the...Ch. 11 - Assuming ideal solution behavior, what is the...Ch. 11 - Assuming ideal solution behavior, what is osmotic...Ch. 11 - Assuming ideal solution behavior, what is the...Ch. 11 - A sample of an organic compound (a nonelectrolyte)...Ch. 11 - A 1.0 m solution of HCI in benzene has a freezing...Ch. 11 - A solution contains 5.00 g of urea, CO(NH2)2 , a...Ch. 11 - A 12.O-g sample of a nonelectrolyte is dissolved...Ch. 11 - Arrange the following solutions in order by their...Ch. 11 - Calculate the boiling point elevation of 0.100 kg...Ch. 11 - How could you prepare a 3.08m aqueous solution of...Ch. 11 - A sample of sulfur weighing 0.210 g was dissolved...Ch. 11 - In a significant experiment performed many years...Ch. 11 - Lysozyme is an enzyme that cleaves cell walls. A...Ch. 11 - The osmotic pressure of a solution containing 7.0...Ch. 11 - The osmotic pressure of human blood is 7.6 atm at...Ch. 11 - Assuming ideal solution behavior, what is the...Ch. 11 - Assuming ideal solution behavior, what is the...Ch. 11 - The sugar fructose contains 40.0% C, 6.7% H, and...Ch. 11 - The vapor pressure of methanol, CH3OH, is 94 torr...Ch. 11 - The triple point of air-free water is defined as...Ch. 11 - Meat can be classified as fresh (not frozen) even...Ch. 11 - An organic compound has a composition of 93.46% C...Ch. 11 - A sample of HgCI2 weighing 9.41 g is dissolved in...Ch. 11 - A salt is known to be an alkali metal fluoride. A...Ch. 11 - Identify the dispersed phase and the dispersion...Ch. 11 - Distinguish between dispersion methods and...Ch. 11 - How do colloids differ from solutions with regard...Ch. 11 - Explain the cleansing action of soap.Ch. 11 - How can it be demonstrated that colloidal...
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- CHEM2323 Problem 2-26 Tt O PS CH02 Name: Use the curved-arrow formalism to show how the electrons flow in the resonance form on the left to give the one on the right. (Draw all lone pairs first) (a) NH2 NH2 + (b) Problem 2-27 Double bonds can also act like Lewis bases, sharing their electrons with Lewis acids. Use curved arrows to show how each of the following double bonds will react with H-Cl and draw the resulting carbocation. (a) H2C=CH2 (b) (c) Problem 2-28 Identify the most electronegative element in each of the following molecules: (a) CH2FCI F Problem 2-29 (b) FCH2CH2CH2Br (c) HOCH2CH2NH2 (d) CH3OCH2Li F 0 0 Use the electronegativity table in Figure 2.3 to predict which bond in the following pairs is more polar and indicate the direction of bond polarity for each compound. (a) H3C-Cl or Cl-CI (b) H3C-H or H-CI (c) HO-CH3 or (CH3)3Si-CH3 (d) H3C-Li or Li-OHarrow_forwardDon't used hand raitingarrow_forwardDon't used hand raitingarrow_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