General, Organic And Biochemistry Hybrid Edition 2nd Edition By James Armstrong - Test Bank

General, Organic And Biochemistry Hybrid Edition 2nd Edition By James Armstrong – Test Bank

 

Instant Download – Complete Test Bank With Answers

 

 

Sample Questions Are Posted Below

 

1. A normal saline solution is a 0.90% (w/v) aqueous solution of NaCl. This is the same as:

a. True
b. False
ANSWER: False

2. The %(v/v) of a solution can be defined as:

a. True
b. False
ANSWER: False

3. Solution contains 55 mg of magnesium in 2.5 L of solution. The concentration of this solution is 2.2 mg/dL.
a. True
b. False
ANSWER: True

4. The concentration of cholesterol in plasma was determined to be 215 mg/dL. The mass of cholesterol in 59.1 mL of this plasma is 127 mg.
a. True
b. False
ANSWER: True

5. The total molarity of an intravenous solution is given on the label as 151 mEq/L. The osmolarity of this solution is also 151 mEq/L.
a. True
b. False
ANSWER: True

6. Dialysis and osmosis are used for the same purposes.
a. True
b. False
ANSWER: False

7. The osmotic pressure of a 0.10 M NaCl solution will be the same as that of a 0.10 M urea solution.
a. True
b. False
ANSWER: False

8. Putting a celery stick in distilled water results in the uptake of water by the celery.
a. True
b. False
ANSWER: True

9. The conversion factor for converting from moles of HPO42–- to equivalents is:

a. True
b. False
ANSWER: True

10. For a 2.00 M solution, the conversion factor for determining the number of moles of solute in a given volume of solution is:

a. True
b. False
ANSWER: True

11. There is a 9 M aqueous HCl solution in the stock room, but a 5 M solution is required for an experiment. Doubling the volume of the 9 M sample with water will produce the 5 M solution.
a. True
b. False
ANSWER: True

12. The following equation can be used when C represents either a M or % (w/v) concentration.

a. True
b. False
ANSWER: True

13. When you have your blood drawn, the most common method of expressing the plasma level of sodium and potassium is as mEq/L.
a. True
b. False
ANSWER: True

14. In cases of cerebral endema, a hypertonic solution is administered. The goal of giving the patient the hypertonic solution would be to pull fluid from the cells through the process of osmosis.
a. True
b. False
ANSWER: True

15. If you have 9 g of NaCl in 1 L of water, this solution is 0.9% NaCl and is called normal saline or NS.
a. True
b. False
ANSWER: True

16. Consider the following graph.

 

The solute is probably a gas.
a. True
b. False
ANSWER: True

17. Solution concentration is an intensive property.
a. True
b. False
ANSWER: True

18. The solubility of Na2SO4 will probably increase with increasing temperature.
a. True
b. False
ANSWER: True

19. The solubility of a compound in water was measured and found to be 0.7 g/L. This compound would be classified as insoluble.
a. True
b. False
ANSWER: True

20. Consider the two containers shown below separated by a seminpermeable membrane. When allowed to stand overnight,

water will have moved from the right-hand container to the left hand container..
a. True
b. False
ANSWER: False

21. Consider the two containers shown below separated by a seminpermeable membrane. When allowed to stand overnight,

there will be no change in the liquid levels.
a. True
b. False
ANSWER: False

22. A solution is made by dissolving 22.5 mL of oil in enough gasoline to give 60.5 mL of solution. What is the % (v/v) of oil in the solution?
a. 37.2 % (v/v)
b. 269% (v/v)
c. 0.372% (v/v)
d. 27.1% (v/v)
ANSWER: a

23. A solution contains 35.5 mg of Vitamin C in 175 mL of solution. The concentration of this solution could be expressed as:
a. 203 ppm.
b. 0.0203% (m/v).
c. 20.3 mg/dL.
d. All of the above could be used.
ANSWER: d

24. A solution has a concentration of 16 ppm. Which of the following is another way to describe the concentration of this solution?
a. 0.016 ppb
b. 0.16 ppb
c. ppb
d. ppb
ANSWER: d

25. Saline solutions (NaCl in water) used to deliver intravenous drugs are 0.89%(w/v). What mass of NaCl would be needed to prepare 450.0 mL of such a solution?
a. g
b. 0.89 g
c. 4.0 g
d. 5.1 g
ANSWER: c

26. What is the mass of salt in a 400.0 gram-sample of salt water which is 1.50% (w/w) salt?
a. 1.50 g
b. 2.67 g
c. 3.00 g
d. 6.00 g
ANSWER: d

27. What is the molar mass of ibuprofen, C13H18O2?
a. 29.0 g/mol
b. 206.3 g/mol
c. 289.4 g/mol
d. 377.7 g/mol
ANSWER: b

28. What is the molarity of a solution containing 0.585 mol of lactic acid in 250.0 mL of solution?
a. 146 M
b. 2.34 M
c. 0.427 M
d. 0.146 M
ANSWER: b

29. A solution is made by dissolving 5.84 grams of NaCl in enough distilled water to give a final volume of 1.00 L. What is the molarity of the solution?
a. 0.100 M
b. 1.00 M
c. 0.0250 M
d. 0.400 M
ANSWER: a

30. How many grams of solid KCl are needed to prepare 250.0 mL of 0.235 M solution?
a. 9.32 g
b. 31.3 g
c. 15.6 g
d. 4.38 g
ANSWER: d

31. Calculate the number of moles of ZnCl2, in 180.0 mL of 0.330 M solution.
a. mol
b. 1.83 mol
c. 0.545 mol
d. 59.4 mol
ANSWER: a

32. If 1.00 mol of each of the following solutes is dissolved in 2.00 L of an aqueous solution, which solution contains the largest number of solute particles?
a. LiBr
b. sucrose
c. Ca(NO3)2
d. Na3PO4
ANSWER: d

33. What is the total molarity of solute particles in a 0.250 M solution of (NH4)2SO4?
a. 0.250 M
b. 0.500 M
c. 0.750 M
d. 0.0833 M
ANSWER: c

34. Calculate the total molarity of solute particles in a solution that contains 0.050 M glucose (a nonelectrolyte) and 0.200 M CaCl2.
a. 0.250 M
b. 0.450 M
c. 0.650 M
d. 0.350 M
ANSWER: c

35. How would the following solution be classified?

0.05 M in KCl and 0.14 M in glucose
a. isotonic
b. hypertonic
c. hypotonic
ANSWER: a

36. What will happen to a red blood cell if placed in the following solution?

0.14 M lactose (a nonelectrolyte)
a. crenation
b. hemolysis
c. nothing
ANSWER: b

37. Which of the following pass through both osmotic and dialysis membranes?
a. solvent molecules
b. large molecules
c. small molecules that are larger than solvent molecules
d. both solvent and small molecules
ANSWER: a

38. The following list gives the concentration of the major components of blood plasma.

Solute Molarity
Na+ 0.12 M
Cl– 0.10 M
HCO3– 0.02 M
proteins 0.02 M

What is the total concentration of all the minor components in the plasma?
a. 0.02 M
b. 0.28 M
c. 0.12 M
d. Cannot be determined with the given information.
ANSWER: a

39. Which of the following is associated with cells in a hypertonic solution?
a. crenation
b. hemolysis
c. reverse osmosis
d. none of these
ANSWER: a

40. Lactated Ringer’s solution 109 mEq/L of Cl–. What is the mass of the chloride ion in 225 mL of this solution?
a. 24.5 g
b. 0.0245 g
c. 0.869 g
d. 0.109 g
ANSWER: c

41. An oral rehydration solution contains 30 mEq/L of citrate3–, what is the molarity of citrate in this solution?
a. 0.09 M
b. 90 M
c. 10 M.
d. 0.01 M
ANSWER: d

42. A solution contains 5.75 mg of magnesium ions in 332 mL of solution. What is the concentration of the solution in mEq/L?
a. 0.712 mEq/L
b. 0.473 mEq/L
c. 1.42 mEq/L.
d. 34.6 mEq/L
ANSWER: c

43. How many mL of 6.00 M HCl are needed to prepare 1.50 L of 0.200 M HCl solution?
a. 1.80 × 104 mL
b. 125 mL
c. 2.00 × 10−3 mL
d. 50.0 mL
ANSWER: d

44. A stockroom attendant has a 15.0% (w/v) solution of KOH. What volume of this solution should she use if she needs to prepare 20.0 mL of a 10.0% (w/v) solution?
a. 6.67 mL
b. 7.50 mL
c. 13.3 mL
d. 15.0 mL
ANSWER: c

45. A solution is prepared by adding 25.0 mL of 1.30 M glucose solution to a flask, and then adding enough water to give a final volume of 200.0 mL. What is the molarity of the solution?
a. 0.260 M
b. 0.163 M
c. 6.50 M
d. 1.24 M
ANSWER: b

46. A normal concentration of sodium (Na) in blood plasma is 141 mEq/L (US average range is 135-145 mEq/L). How many mg of sodium are there in a 10.0 mL sample of his blood plasma?
a. 141 mg
b. 14.1 mg
c. 1.41 mg
d. 1.40 × 103 mg
ANSWER: c

47. Which of the following is(are) an example(s) of a hypertonic intravenous solution? (NS represents normal saline.)
a. 0.9% NS
b. 0.45% NS with D5 (termed half Normal Saline with Dextrose 5%)
c. a. D5 ½ NS (Dextrose 5% with half NS)
d. a. 2% NS
e. all are hypertonic solutions
f. only b and d are hypertonic solutions
ANSWER: f

48. Based on the following graph, the solubility of this substance at 80 °C is approximately:

a. 25 g/L.
b. 15 g/L.
c. 10 g/L
d. 20 g/L
ANSWER: b

49. Based on the following graph, approximately what minimum temperature would be needed to dissolved 20 g of this solute in 1.00 L of water?

a. 9
C
b. 100
C
c. 35
C
d. 80
C
ANSWER: b

50. A student is preparing a sugar water solution to make rock candy. When the student adds sugar to the solution, the added sugar does not dissolve. Which kind of solution does the student have?
a. a saturated solution
b. a solution at its solubility limit
c. an unsaturated solution
d. a suspension
ANSWER: a

51. If a solution contains 3.25 mol of Al3+, how many equivalents of Al3+ are present?
a. 3.25 Eq
b. 1.08 Eq
c. 6.50 Eq
d. 9.75 Eq
ANSWER: d

Consider two solutions, A and B, separated by a seminpermeable membrane that allows water and small molecules to pass through as shown below.

 

Fill the blank(s) with the appropriate terms from the list below.

right
left
osmosis
dialysis

52. Solution A is pure water, and solution B is 0.05 M glucose. Water molecules will move to the ______________________compartment and glucose molecules will move to the __________________compartment.
ANSWER: right, left

53. Solution A is 0.10 M in fructose and 0.05 M in glucose. Solution B is 0.20 M in sucrose. The direction of osmosis will be to the _______________________.
ANSWER: right

54. Solution A is 0.10 M in lactose and 0.050 M in urea. Solution B is 0.15 M in KCl. Water will flow to the ______________________compartment.
ANSWER: left

55. Solution A is 0.50 M in sucrose and Solution is 1.5 M in sucrose. After one hour, the compartment on the ____________________ will have the higher osmotic pressure.
ANSWER: right

56. Solution A is 0.010 M glucose, and solution B is 0.050 M glucose. The glucose will dialyze to the _____________________.
ANSWER: left

57. If the seminpermeable membrane has pores too small to allow glucose to pass through, ______________will not occur.
ANSWER: dialysis

Consider the solutions shown in the containers below. The composition of each solution is given in the image.

 

 

Fill the blank with the appropriate term from the list below.

isotonic
hypotonic
hypertonic
crenation
hemolysis
no change

58. A red blood cell is placed in the solution in container A. The cell will undergo _____________________.
ANSWER: hemolysis

59. A red blood cell is placed in the solution in container B. The cell will undergo ____________________.
ANSWER: no change

60. A red blood cell is placed in the solution in container C. The cell will undergo ____________________.
ANSWER: crenation

61. The tonicity of the solution in container C is ______________________.
ANSWER: hypertonic

Consider the following structure.

 

Complete the sentence using the appropriate terms given below.

hydrophobic
hydrophilic
soluble
insoluble

62. The portion of the molecule in the box is classified as ______________________ and that in the circle is classified as_____________________.
ANSWER: hydrophobic, hydrophilic

63. This molecule is probably____________________in water.
ANSWER: insoluble

For the following questions, fill in the blank with one of the following terms as appropriate.

increase
decrease
remains constant
cannot predict

64. As the size of the hydrophobic portion of a molecule increases, the solubility in water will ___________.
ANSWER: decrease

65. When a beverage can is opened the pressure of the gas above the liquid will___________ causing the solubility of the gas to ____________.
ANSWER: decrease, decrease

66. For many ionic solids such as NaHCO3 water solubility will ___________ at higher temperatures..
ANSWER: increase

The vitamins A (retinol) and C (ascorbic acid) are shown below. All atoms other than C and H are explicitly shown.

A C

Complete the following questions be entered in the appropriate letter (A or C) in the blank provided.

67. The vitamin that would be the most hydrophobic is ______.
ANSWER: A

68. The vitamin that would be classified as fat-soluble is ______.
ANSWER: A

69. The vitamin that would not be stored by the human body is ______.
ANSWER: C

70. The beaker below contains oil (a compound of mostly carbon and hydrogen) in the upper layer and water in the lower layer. Oil floats on top of the water because it is less dense.

The vitamin that would be the most soluble in the upper layer is ______.
ANSWER: A

71. Write the conversion factor that corresponds to 7.75%(w/v) NaCl.
ANSWER:

 

 

 

Consider the two containers separated by a semipermeable membrane that allows both glucose and sucrose to pass through.

 

Answer the following questions as appropriate with: right, left, or no movement.

72. Upon standing the glucose molecules will move in which direction?
ANSWER: right

73. Upon standing the water molecules will move in which direction?
ANSWER: no movement

74. Upon standing the sucrose molecules will move in which direction?
ANSWER: left

75. What is the total molarity of a solution containing 25.7 g of sucrose (C12H22O11) and 16.1 g of ribose (C5H10O5) dissolved in enough water to produce 850.0 mL of solution?
ANSWER: 0.215 M

76. Calculate the percent concentration (m/v) of a solution prepared by dissolving 6.45 g of glucose in enough water to produce 85.0 mL of solution?
ANSWER: 7.6 (m/v)%

77. Calculate the parts per million (ppm) of a solution prepared by dissolving 7.45 mg of glucose in enough water to produce 145.0 mL of solution?
ANSWER: 51.4 ppm