Introduction to General, Organic and Biochemistry
12th Edition
ISBN: 9780357119303
Author: Bettelheim, Frederick A., Brown, William H., Campbell, Mary K., FARRELL, Shawn O., Torres, Omar
Publisher: Cengage Learning
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Chapter 6, Problem 68P
Interpretation Introduction
Interpretation:
The use of helium-oxygen mixture instead of air in the tanks by deep-sea divers should be explained.
Concept Introduction:
Oxygen and nitrogen might be dangerous at certain concentrations related to several pressures.
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6. A quantity of solid sodium peroxide is reacted with excess water. The products of the
reaction are aqueous sodium hydroxide and oxygen gas.
(a) If 65.0 mL of oxygen gas at STP and 150.0 mL of sodium hydroxide solution resulted
from the reaction, what is the molarity of the sodium hydroxide?
(b) How many grams of sodium peroxide were used in problem 6(a)?
(c) What would be the answer to question 6(a) if 84.5 mL of oxygen gas was collected at
35°C and 745 torr?
Natural gas is a mixture of hydrocarbons, primarily methane (CH4) and ethane (C2H6). A typical mixture might have mole fraction of methane = 0.915 and mole fraction of ethane = 0.085. (a) What are the partial pressure of the two gases in a 14.10 L container of natural gas at 30 degrees Celcius and 1.34 atm? (b) Assuming complete combustion of both gases in the natural gas sample, what is the total mass of water formed? Hint: Write the balanced combustion chemical equation for each gas separately in the gas mixture to find the mass of water formed.
Suppose that a 26.4mL volume of HCl solution reactions completely with 55.0 mL of aqueous Na2CO3. The volume of CO2 formed is 148 mL at 23 degrees Celsius and 732 mmHg. What is the molarity of the HCl solution?
Chapter 6 Solutions
Introduction to General, Organic and Biochemistry
Ch. 6.5 - Problem 6-1 How would we prepare 250 mL of a 4.4%...Ch. 6.5 - Prob. 6.2QCCh. 6.5 - Problem 6-3 How would we prepare 2.0 L of a 1.06 M...Ch. 6.5 - Prob. 6.4QCCh. 6.5 - Problem 6-5 If a 0.300 M glucose solution is...Ch. 6.5 - Problem 6-6 A certain wine contains 0.010 M NaHSO3...Ch. 6.5 - Prob. 6.7QCCh. 6.5 - Problem 6-8 A concentrated solution of 15% w/v KOH...Ch. 6.5 - Problem 6-9 Sodium hydrogen sulfate, NaHSO4, which...Ch. 6.8 - Prob. 6.10QC
Ch. 6.8 - Prob. 6.11QCCh. 6.8 - Prob. 6.12QCCh. 6.8 - Problem 6-13 What is the osmolarity of a 3.3% w/v...Ch. 6.8 - Prob. 6.14QCCh. 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. 10PCh. 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. 13PCh. 6 - 6-28 Which pairs of liquids are likely to be...Ch. 6 - Prob. 15PCh. 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. 19PCh. 6 - Prob. 20PCh. 6 - 6-35 Describe how we would prepare the following...Ch. 6 - Prob. 22PCh. 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. 28PCh. 6 - 6-43 The label on a sparkling cider says it...Ch. 6 - Prob. 30PCh. 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. 36PCh. 6 - Prob. 37PCh. 6 - Prob. 38PCh. 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. 42PCh. 6 - Prob. 43PCh. 6 - Prob. 44PCh. 6 - Prob. 45PCh. 6 - 6-60 Predict which of these covalent compounds is...Ch. 6 - On the basis of Tables 6.1 and 6.2 , classify the...Ch. 6 - Prob. 48PCh. 6 - Prob. 49PCh. 6 - Prob. 50PCh. 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. 53PCh. 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. 56PCh. 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. 60PCh. 6 - Prob. 61PCh. 6 - Prob. 62PCh. 6 - Prob. 63PCh. 6 - Prob. 64PCh. 6 - Prob. 65PCh. 6 - 6-78 (Chemical Connections 6A) Oxides of nitrogen...Ch. 6 - Prob. 67PCh. 6 - Prob. 68PCh. 6 - Prob. 69PCh. 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. 73PCh. 6 - Prob. 74PCh. 6 - Prob. 75PCh. 6 - Prob. 76PCh. 6 - Prob. 77PCh. 6 - Prob. 78PCh. 6 - 6-91 When a cucumber is put into a saline solution...Ch. 6 - Prob. 80PCh. 6 - 6-93 Two bottles of water are carbonated, with CO2...Ch. 6 - Prob. 82PCh. 6 - Prob. 83PCh. 6 - 6-96 We know that a 0.89% saline (NaCI) solution...Ch. 6 - Prob. 85PCh. 6 - Prob. 86PCh. 6 - 6-99 A concentrated nitric acid solution contains...Ch. 6 - 6-100 Which will have greater osmotic pressure?...Ch. 6 - Prob. 89PCh. 6 - Prob. 90PCh. 6 - 6-103 A swimming pool containing 20,000. L of...Ch. 6 - Prob. 92PCh. 6 - Prob. 93PCh. 6 - Prob. 94PCh. 6 - Prob. 95PCh. 6 - Prob. 96PCh. 6 - Prob. 97PCh. 6 - Prob. 98PCh. 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...Ch. 6 - Prob. 102P
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- 6-38 Describe how we would prepare 250 mL of 0.10 M NaOH from solid NaOH and water.arrow_forward5-89 (Chemical Connections 5C) In a sphygmomanometer one listens to the first tapping sound as the constrictive pressure of the arm cuff is slowly released. What is the significance of this tapping sound?arrow_forward6-78 (Chemical Connections 6A) Oxides of nitrogen (NO, NO2,N2O3) are also responsible for acid rain. Which acids can be formed from these nitrogen oxides?arrow_forward
- 6-31 If a bottle of beer is allowed to stand for several hours after being opened, it becomes "flat" (it loses CO2). Explain.arrow_forward5-111 Diving, particularly SCUBA (Self-Contained Underwater Breathing Apparatus) diving, subjects the body to increased pressure. Each 10. m (approximately 33 ft) of water exerts an additional pressure of 1 atm on the body. (a) What is the pressure on the body at a depth of 100. ft? (b) The partial pressure of nitrogen gas in air at 1 atm is 593 mm Hg. Assuming a SCUBA diver breathes compressed air, what is the partial pressure of nitrogen entering the lungs from a breathing tank at a depth of 100. ft? (c) The partial pressure of oxygen gas in the air at 2 atm is 158 mm Hg. What is the partial pressure of oxygen in the air in the lungs at a depth of 100. ft? (d) Why is it absolutely essential to exhale vigorously in a rapid ascent from a depth of 100. ft?arrow_forwardHow many liters of HCI gas, measured at 30.0 C and 745 torr, are required to prepare 1.25 L of a 3.20-M solution of hydrochloric acid?arrow_forward
- 6-103 A swimming pool containing 20,000. L of water is chlorinated to have a final CI2 concentration of 0.00500 M. What is the CI2 concentration in ppm? How many kilograms of CI2 were added to the swimming pool to reach this concentration?arrow_forward6-66 What gives nanotubes their unique optical and electrical properties?arrow_forward6-53 Dioxin is considered to be poisonous in concentrations above 2 ppb. If a lake containing L has been contaminated by 0.1 g of dioxin, did the concentration reach a dangerous level?arrow_forward
- 6-91 When a cucumber is put into a saline solution to pickle it, the cucumber shrinks; when a prune is put into the same solution, the prune swells. Explain what happens in each case.arrow_forward6-30 Near a power plant, warm water is discharged into a river. Sometimes dead fish are observed in the area. Why do fish die in the warm water?arrow_forwardExplain how the volume of the bubbles exhausted by a scuba diver (Figure 9.16) change as they rise to the surface, assuming that they remain intact.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