Introduction to General, Organic and Biochemistry
Introduction to General, Organic and Biochemistry
11th Edition
ISBN: 9781285869759
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
Question
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Chapter 6, Problem 6.61P
Interpretation Introduction

(a)

Interpretation:

Whether the given statement is true or false should be determined.

Concept Introduction:

A substance which is microscopically dispersed evenly throughout another substance is said to be a colloid. A colloid has continuous and dispersed phase. The diameter of dispersed-phase particles is between 1 and 1000 nm.

Interpretation Introduction

(b)

Interpretation:

Whether the given statement is true or false should be determined.

Concept Introduction:

A substance which is microscopically dispersed evenly throughout another substance is said to be a colloid. A colloid has continuous and dispersed phase. The diameter of dispersed-phase particles is between 1 and 1000 nm.

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Osmotic pressure can be very useful for estimating the molecular weights of macromolecules for whom a molecular formula may not be available as it can provide greater precision in the measurement. (a) 1.364 g of a protein with molecular mass 1.78 × 104 g/mol is dissolved in enough water to create 100.0 mL of solution at 298 K. What would be the expected osmotic pressure (in bars) of this solution? (b) If 1.853 g of a protein are dissolved in enough water to make up 100.0 mL of solution at 298 K, then the osmotic pressure is observed to be 2.521 torr (3.361 × 10-³ bar). What is the molar mass (g/mol) of the protein?
The mole fraction of sodium chloride, NaCl, in a saturated aqueous solution is 0,220. (a)  What is the molality (molal concentration) of this solution? (b)  What is the molarity (molar concentration) of this solution if it has a density of 1,150 g.cm–3? (c)  What is the mass percentage NaCl in the solution? Which of the following liquids are likely to be miscible with water: 1-propanol (CH3CH2CH2OH), carbon tetrachloride (CCl4), hexane (C6H14), and acetic acid (CH3CO2H)? Motivate your choice(s) using your knowledge of intermolecular forces. The vapor pressure of pure water at 45 °C is 71,9 mm Hg. What is the vapor pressure of a mixture of 21,0 g sucrose (C12H22O11, molar mass 342,3 g/mol) and 79,0 g water? What is the freezing point of a solution containing 4,78 grams naphthalene (molar mass = 128,2 g/mol) dissolved in 32,0 grams paradichlorobenzene? The freezing point of pure paradichlorobenzene is 53,0 °C and the freezing point depression constant, Kfp, is –7,10 °C/m.…

Chapter 6 Solutions

Introduction to General, Organic and Biochemistry

Ch. 6.8 - Prob. 6.11PCh. 6.8 - Prob. 6.12PCh. 6.8 - Problem 6-13 What is the osmolarity of a 3.3% w/v...Ch. 6.8 - Prob. 6.14PCh. 6 - 6-15 Answer true or false. (a) A solute is the...Ch. 6 - 6-16 Answer true or false. (a) Solubility is a...Ch. 6 - 6-17 Vinegar is a homogeneous aqueous solution...Ch. 6 - 6-18 Suppose you prepare a solution by dissolving...Ch. 6 - 6-19 In each of the following, tell whether the...Ch. 6 - 6-20 Give a familiar example of solutions of each...Ch. 6 - 6-21 Are mixtures of gases true solutions or...Ch. 6 - 6-22 Answer true or false. (a) Water is a good...Ch. 6 - 6-23 We dissolved 0.32 g of aspartic acid in 115.0...Ch. 6 - Prob. 6.24PCh. 6 - 6-25 A small amount of solid is added to a...Ch. 6 - 6-26 On the basis of polarity and hydrogen...Ch. 6 - Prob. 6.27PCh. 6 - 6-28 Which pairs of liquids are likely to be...Ch. 6 - Prob. 6.29PCh. 6 - 6-30 Near a power plant, warm water is discharged...Ch. 6 - 6-31 If a bottle of beer is allowed to stand for...Ch. 6 - 6-32 Would you expect the solubility of ammonia...Ch. 6 - Prob. 6.33PCh. 6 - Prob. 6.34PCh. 6 - 6-35 Describe how we would prepare the following...Ch. 6 - Prob. 6.36PCh. 6 - 6-37 Calculate the w/v percentage of each of these...Ch. 6 - 6-38 Describe how we would prepare 250 mL of 0.10...Ch. 6 - 6-39 Assuming that the appropriate volumetric...Ch. 6 - 6-40 What is the molarity of each solution? (a) 47...Ch. 6 - 6-41 A teardrop with a volume of 0.5 mL contains...Ch. 6 - Prob. 6.42PCh. 6 - 6-43 The label on a sparkling cider says it...Ch. 6 - Prob. 6.44PCh. 6 - 6-45 The label on ajar of jam says it contains 13...Ch. 6 - 6-46 A particular toothpaste contains 0.17 g NaF...Ch. 6 - 6-47 A student has a bottle labeled 0.750% albumin...Ch. 6 - 6-48 How many grams of solute are present in each...Ch. 6 - 6-49 A student has a stock solution of 30.0% w/v...Ch. 6 - Prob. 6.50PCh. 6 - Prob. 6.51PCh. 6 - Prob. 6.52PCh. 6 - 6-53 Dioxin is considered to be poisonous in...Ch. 6 - 6-54 An industrial wastewater contains 3.60 ppb...Ch. 6 - 6-55 According to the label on a piece of cheese,...Ch. 6 - Prob. 6.56PCh. 6 - Prob. 6.57PCh. 6 - Prob. 6.58PCh. 6 - Prob. 6.59PCh. 6 - 6-60 Predict which of these covalent compounds is...Ch. 6 - Prob. 6.61PCh. 6 - Prob. 6.62PCh. 6 - Prob. 6.63PCh. 6 - Prob. 6.64PCh. 6 - Prob. 6.65PCh. 6 - 6-66 What gives nanotubes their unique optical and...Ch. 6 - 6-67 Calculate the freezing points of solutions...Ch. 6 - 6-68 If we add 175 g of ethylene glycol, C2H6O2,...Ch. 6 - Prob. 6.69PCh. 6 - 6-70 In winter, after a snowstorm, salt (NaCI) is...Ch. 6 - 6-71 A 4 M acetic acid (CH3COOH) solution lowers...Ch. 6 - Prob. 6.72PCh. 6 - 6-73 In each case, tell which side (if either)...Ch. 6 - 6-74 An osmotic semipermeable membrane that allows...Ch. 6 - 6-75 Calculate the osmolarity of each of the...Ch. 6 - Prob. 6.76PCh. 6 - Prob. 6.77PCh. 6 - 6-78 (Chemical Connections 6A) Oxides of nitrogen...Ch. 6 - Prob. 6.79PCh. 6 - Prob. 6.80PCh. 6 - Prob. 6.81PCh. 6 - 6-82 (Chemical Connections 6C) A solution contains...Ch. 6 - 6-83 (Chemical Connections 6C) The concentration...Ch. 6 - 6-84 (Chemical Connections 6D) What is the...Ch. 6 - Prob. 6.85PCh. 6 - Prob. 6.86PCh. 6 - Prob. 6.87PCh. 6 - Prob. 6.88PCh. 6 - Prob. 6.89PCh. 6 - Prob. 6.90PCh. 6 - 6-91 When a cucumber is put into a saline solution...Ch. 6 - Prob. 6.92PCh. 6 - 6-93 Two bottles of water are carbonated, with CO2...Ch. 6 - Prob. 6.94PCh. 6 - Prob. 6.95PCh. 6 - 6-96 We know that a 0.89% saline (NaCI) solution...Ch. 6 - Prob. 6.97PCh. 6 - Prob. 6.98PCh. 6 - 6-99 A concentrated nitric acid solution contains...Ch. 6 - 6-100 Which will have greater osmotic pressure?...Ch. 6 - Prob. 6.101PCh. 6 - Prob. 6.102PCh. 6 - 6-103 A swimming pool containing 20,000. L of...Ch. 6 - Prob. 6.104PCh. 6 - Prob. 6.105PCh. 6 - Prob. 6.106PCh. 6 - Prob. 6.107PCh. 6 - Prob. 6.108PCh. 6 - Prob. 6.109PCh. 6 - Prob. 6.110PCh. 6 - 6-111 As noted in Section 6-8C, the amount of...Ch. 6 - 6-112 List the following aqueous solutions in...Ch. 6 - 6-113 List the following aqueous solutions in...
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