Introductory Chemistry: A Foundation
9th Edition
ISBN: 9781337399425
Author: Steven S. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Chapter 15, Problem 13QAP
How do we define the mass percent composition of a solution? Give an example of a solution, and explain the relative amounts of solute and solvent present in the solution in terms of the mass percent composition.
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alt
ons for
Free Response Questions
FRQ 1:
0/5
To spectrophotometrically determine the mass percent of cobalt in an ore containing cobalt and
some inert materials, solutions with known [Co?) are prepared and absorbance of each of the
solutions is measured at the wavelength of optimum absorbance. The data are used to create a
calibration plot, shown below.
0.90-
0.80-
0.70
0.60
0.50
0.40-
0.30
0.20-
0.10-
0.00-
0.005
0.010
Concentration (M)
0.015
A 0.630 g sample of the ore is completely dissolved in concentrated HNO3(aq). The mixture is diluted
with water to a final volume of 50.00 ml. Assume that all the cobalt in the ore sample is converted to
Co2+(aq).
a. What is the [Co2] in the solution if the absorbance of a sample of the solution is 0.74?
13
✗
b. Calculate the number of moles of Co2+(aq) in the 50.00 mL solution.
0.008 mols Co
Please correct answer and don't used hand raiting
Chapter 15 Solutions
Introductory Chemistry: A Foundation
Ch. 15.3 - ercise 15.1 A 1 35-g sample of seawater is...Ch. 15.3 - Prob. 15.2SCCh. 15.4 - ercise 15.3 Calculate the molarity of a solution...Ch. 15.4 - ercise 15.4 Give the concentrations of the ions in...Ch. 15.4 - ercise 15.5 Calculate the number of moles of Cl...Ch. 15.4 - ercise 15.6 Formalin is an aqueous solution of...Ch. 15.5 - ercise 15.7 What volume of 12 M HCI must be taken...Ch. 15.6 - at if all ionic solids were soluble in water? How...Ch. 15.6 - Exercise 15.8 When aqueous solutions of Na2SO3 and...Ch. 15.7 - ercise 15.9 Calculate the volume of 0.10 M HNO3...
Ch. 15.8 - ercise 15.10 Calculate the normality of a solution...Ch. 15.8 - Prob. 15.11SCCh. 15 - ou have a solution of table sail in water. What...Ch. 15 - onsider a sugar solution (solution A) with...Ch. 15 - You need to make 150.0 mL of a 0.10 M NaCI...Ch. 15 - ou have two solutions containing solute A. To...Ch. 15 - m>5. Which of the following do you need to know to...Ch. 15 - onsider separate aqueous solutions of HCI and...Ch. 15 - Prob. 7ALQCh. 15 - an one solution have a greater concentration than...Ch. 15 - Prob. 9ALQCh. 15 - You have equal masses of different solutes...Ch. 15 - Which of the following solutions contains the...Ch. 15 - As with all quantitative problems in chemistry,...Ch. 15 - Prob. 13ALQCh. 15 - Prob. 14ALQCh. 15 - solution is a homogeneous mixture. Can you give an...Ch. 15 - ow do the properties of a nonhomogeneous...Ch. 15 - Prob. 3QAPCh. 15 - Prob. 4QAPCh. 15 - n Chapter 14. you learned that the bonding forces...Ch. 15 - n oil spill spreads out on the surface of water,...Ch. 15 - . The “Chemistry in Focus” segment Water, Water...Ch. 15 - Prob. 8QAPCh. 15 - Prob. 9QAPCh. 15 - Prob. 10QAPCh. 15 - A solution is a homogeneous mixture and, unlike a...Ch. 15 - Prob. 12QAPCh. 15 - How do we define the mass percent composition of a...Ch. 15 - Prob. 14QAPCh. 15 - Calculate the percent by mass of solute in each of...Ch. 15 - Calculate the percent by mass of solute in each of...Ch. 15 - Prob. 17QAPCh. 15 - Prob. 18QAPCh. 15 - A sample of an iron alloy contains 92.1 g Fe. 2.59...Ch. 15 - Consider the iron alloy described in Question 19....Ch. 15 - An aqueous solution is to be prepared that will be...Ch. 15 - Prob. 22QAPCh. 15 - A solution is to be prepared that will be 4.50% by...Ch. 15 - Prob. 24QAPCh. 15 - Prob. 25QAPCh. 15 - Hydrogen peroxide solutions sold in drugstores as...Ch. 15 - Prob. 27QAPCh. 15 - A solvent sold for use in the laboratory contains...Ch. 15 - Prob. 29QAPCh. 15 - A solution labeled “0.25 M AICl3” would contain...Ch. 15 - What is a standard solution? Describe the steps...Ch. 15 - Prob. 32QAPCh. 15 - 33. For each of the following solutions, the...Ch. 15 - 34. For each of the following solutions, the...Ch. 15 - 35. For each of the following solutions, the mass...Ch. 15 - Prob. 36QAPCh. 15 - 37. A laboratory assistant needs to prepare 225 mL...Ch. 15 - Prob. 38QAPCh. 15 - 39. Standard solutions of calcium ion used to test...Ch. 15 - Prob. 40QAPCh. 15 - 41. If 42.5 g of NaOH is dissolved in water and...Ch. 15 - 42. Standard silver nitrate solutions are used in...Ch. 15 - Prob. 43QAPCh. 15 - Prob. 44QAPCh. 15 - Prob. 45QAPCh. 15 - Prob. 46QAPCh. 15 - Prob. 47QAPCh. 15 - 48. What mass of solute is present in 225 mL of...Ch. 15 - Prob. 49QAPCh. 15 - Prob. 50QAPCh. 15 - Prob. 51QAPCh. 15 - 52. What volume of a 0.300 M CaCl2 solution is...Ch. 15 - Prob. 53QAPCh. 15 - Prob. 54QAPCh. 15 - Prob. 55QAPCh. 15 - Prob. 56QAPCh. 15 - Prob. 57QAPCh. 15 - Prob. 58QAPCh. 15 - Prob. 59QAPCh. 15 - 60. Suppose 325 in L of 0.150 M NaOH is needed for...Ch. 15 - 61. How much water must be added w 500. mL of...Ch. 15 - Prob. 62QAPCh. 15 - Prob. 63QAPCh. 15 - 64. Generally only the carbonates of the Group I...Ch. 15 - 65. Many metal ions are precipitated from solution...Ch. 15 - 66. Calcium oxalate, CaCO4, is very insoluble in...Ch. 15 - 67. When aqueous solutions of lead(II) ion are...Ch. 15 - 68. Aluminum ion may be precipitated from aqueous...Ch. 15 - 69. What volume of 0.502 M NaOH solution would be...Ch. 15 - 70. What volume of a 0.500 M NaOH solution would...Ch. 15 - 71. A sample of sodium hydrogen carbonate solid...Ch. 15 - 72. The total acidity in water samples can be...Ch. 15 - Prob. 73QAPCh. 15 - Prob. 74QAPCh. 15 - Prob. 75QAPCh. 15 - Prob. 76QAPCh. 15 - 77. Explain why the equivalent weight of H2SO4 is...Ch. 15 - Prob. 78QAPCh. 15 - Prob. 79QAPCh. 15 - Prob. 80QAPCh. 15 - Prob. 81QAPCh. 15 - Prob. 82QAPCh. 15 - Prob. 83QAPCh. 15 - Prob. 84QAPCh. 15 - 85. How many milliliters of 0.50 N NaOH are...Ch. 15 - 86. What volume of 0.104 N H2SO4is required to...Ch. 15 - 87. What volume of 0.151 N NaOH is required to...Ch. 15 - Prob. 88QAPCh. 15 - 89. A mixture is prepared by mixing 50.0 g of...Ch. 15 - Prob. 90APCh. 15 - 91. Suppose 50.0 mL of 0.250 M CoCl2 solution is...Ch. 15 - Prob. 92APCh. 15 - 93. Calculate the mass of AgCl formed, and the...Ch. 15 - 94. Baking soda (sodium hydrogen carbonate....Ch. 15 - 95. Many metal ions form insoluble sulfide...Ch. 15 - Prob. 96APCh. 15 - Prob. 97APCh. 15 - Prob. 98APCh. 15 - Prob. 99APCh. 15 - Prob. 100APCh. 15 - Prob. 101APCh. 15 - You mix 225.0 mL of a 2.5 M HCl solution with...Ch. 15 - A solution is 0.1% by mass calcium chloride....Ch. 15 - Prob. 104APCh. 15 - Prob. 105APCh. 15 - A certain grade of steel is made by dissolving 5.0...Ch. 15 - Prob. 107APCh. 15 - Prob. 108APCh. 15 - Prob. 109APCh. 15 - Prob. 110APCh. 15 - How many moles of each ion are present in 11.7 mL...Ch. 15 - Prob. 112APCh. 15 - Prob. 113APCh. 15 - Prob. 114APCh. 15 - Concentrated hydrochloric acid is made by pumping...Ch. 15 - Prob. 116APCh. 15 - Prob. 117APCh. 15 - Prob. 118APCh. 15 - If 10. g of AgNO3 is available, what volume of...Ch. 15 - Prob. 120APCh. 15 - Calcium carbonate, CaCO3, can be obtained in a...Ch. 15 - Prob. 122APCh. 15 - How many milliliters of 18.0 M H2SO4 are required...Ch. 15 - Consider the reaction between 1.0 L of 3.0 M...Ch. 15 - When 10. L of water is added to 3.0 L of 6.0 M...Ch. 15 - Prob. 126APCh. 15 - How many grams of Ba (NO3)2are required to...Ch. 15 - Prob. 128APCh. 15 - What volume of 0.250 M HCI is required to...Ch. 15 - Prob. 130APCh. 15 - Prob. 131APCh. 15 - Prob. 132APCh. 15 - How many milliliters of 0.105 M NaOH are required...Ch. 15 - Prob. 134APCh. 15 - Prob. 135APCh. 15 - Consider the reaction between 0.156 L of 0.105 M...Ch. 15 - Prob. 137CPCh. 15 - A solution is prepared by dissolving 0.6706 g of...Ch. 15 - What volume of 0.100 M NaOH is required to...Ch. 15 - Prob. 140CPCh. 15 - A 450.O-mL sample of a 0.257 M solution of silver...Ch. 15 - A 50.00-mL sample of aqueous Ca(OH)2 requires...Ch. 15 - When organic compounds containing sulfur are...Ch. 15 - Prob. 1CRCh. 15 - Prob. 2CRCh. 15 - Prob. 3CRCh. 15 - Prob. 4CRCh. 15 - Prob. 5CRCh. 15 - Prob. 6CRCh. 15 - Prob. 7CRCh. 15 - Prob. 8CRCh. 15 - Prob. 9CRCh. 15 - Prob. 10CRCh. 15 - Prob. 11CRCh. 15 - Without consulting your textbook, list and explain...Ch. 15 - What does “STP’ stand for? What conditions...Ch. 15 - Prob. 14CRCh. 15 - Prob. 15CRCh. 15 - Define the normal boiling point of water. Why does...Ch. 15 - Are changes in state physical or chemical changes?...Ch. 15 - Prob. 18CRCh. 15 - Prob. 19CRCh. 15 - Prob. 20CRCh. 15 - Define a crystalline solid. Describe in detail...Ch. 15 - Define the bonding that exists in metals and how...Ch. 15 - Prob. 23CRCh. 15 - Define a saturated solution. Does saturated mean...Ch. 15 - Prob. 25CRCh. 15 - When a solution is diluted by adding additional...Ch. 15 - Prob. 27CRCh. 15 - Prob. 28CRCh. 15 - Prob. 29CRCh. 15 - Prob. 30CRCh. 15 - Prob. 31CRCh. 15 - When calcium carbonate is heated strongly, it...Ch. 15 - If an electric current is passed through molten...Ch. 15 - Prob. 34CRCh. 15 - Prob. 35CRCh. 15 - Prob. 36CRCh. 15 - Prob. 37CRCh. 15 - Prob. 38CRCh. 15 - Prob. 39CRCh. 15 - Prob. 40CRCh. 15 - Prob. 41CRCh. 15 - 42. a. Fill in the following table as if it is a...
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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