MMSC436 - QUIZ 10 QUESTIONS WITH VERIFIED
ANSWERS
Which of the following best defines the term "solution"
A. A combination of two or more different chemical elements in which the atoms of the
different elements are held together by chemical bonds
B. A heterogeneous combination of two or more substances where the properties of
each individual substance are absorbed by the other(s)
C. A homogeneous mixture of two or more substances that do not chemically react with
each other
D. A mixture of two or more substances that results in a change in the molecular
composition of each substance - answers - c. A homogeneous mixture of two or more
substances that do not chemically react with each other
2. A solution is composed of 1% sodium chloride and 0.5% potassium chloride in
distilled water. Which substance(s) would be considered the solute?
A. Potassium chloride
B. Sodium chloride
C. Potassium chloride and sodium chloride
D. Water - answers - c. Potassium chloride and sodium chloride
3. A solution in which the solvent is water is referred to as
A. Aqueous.
B. Dissolved.
C. Liquid.
D. Soluble. - answers - a. Aqueous.
4. A vial of 3 mg silver chloride (agcl) is poured into a flask containing 100 ml water and
mixed. After 24 hours, 2.9 mg of silver chloride remains as a solid at the bottom of the
flask. Which of the following terms best describes the ability of silver chloride to dissolve
in water?
A. Insoluble
B. Partly soluble
C. Soluble
D. Sparingly soluble - answers - d. Sparingly soluble
5. What is the risk of reporting an incorrect concentration for a patient sample? A.
Administration of an inappropriate drug
B. Misdiagnosis of an illness
C. Both of the above
D. Neither of the above - answers - c. Both of the above
, 6. The concentration of an aqueous glucose solution is noted as 25% glucose (w/v).
What does this tell us about the amount of glucose in the solution?
A. There are 0.25 grams of glucose in every 100 ml of solution.
B. There are 2.5 grams of glucose in every 100 ml of solution.
C. There are 25 grams of glucose in every 100 ml of solution.
D. There are 250 grams of glucose in every 100 ml of solution. - answers - c. There are
25 grams of glucose in every 100 ml of solution.
7. The concentration of a sodium chloride (nacl) solution is defined as 10% nacl (w/w).
What does this tell us about the amount of nacl in the solution?
A. There are 10 grams of nacl in every 10% of solution.
B. There are 10 grams of nacl in every 100 grams of solution.
C. There are 10 grams of nacl in every 100 ml of solution.
D. There are 10 grams of nacl in every 100 ounces of solution. - answers - b. There are
10 grams of nacl in every 100 grams of solution.
8. A solution of aqueous ferric chloride has a concentration of 15 ppm. What does this
tell us about the amount of ferric chloride in the solution?
A. There are 15 grams of ferric chloride in every 1,000,000 grams of solution.
B. There are 15 grams of ferric chloride in every 1,000,000 ml of solution.
C. There are 15 ml of ferric chloride in every 1,000,000 ml of solution.
D. Both a and b are correct. - answers - d. Both a and b are correct.
9. When a concentration is expressed in terms of molarity, what does it tell us about the
solution?
A. The number of moles of a solute present in 1 liter of solution
B. The number of moles of a solute present in 1,000 grams of solution
C. The number of osmoles of a solute present in 1 liter of solution
D. The number of osmoles of a solute present in 1,000 grams of solution - answers - a.
The number of moles of a solute present in 1 liter of solution
10. A solution of sodium chloride (nacl. Is calculated to be 0.5 m at 37°c. The solution
was placed in an 18°c refrigerator for 24 hours and the molarity was recalculated. What
would you expect the molarity of the solution to be?
A. 0.5 m
B. Greater than 0.5 m
C. Less than 0.5 m
D. It cannot be determined from the information given. - answers - b. Greater than 0.5 m
11. Consider the following equation:
8.5 moles glucose
Concentration of glucose = kilogram 0.1 water
What are the units of the value calculated by this equation?
A. Molal
B. Molar
C. V/v
ANSWERS
Which of the following best defines the term "solution"
A. A combination of two or more different chemical elements in which the atoms of the
different elements are held together by chemical bonds
B. A heterogeneous combination of two or more substances where the properties of
each individual substance are absorbed by the other(s)
C. A homogeneous mixture of two or more substances that do not chemically react with
each other
D. A mixture of two or more substances that results in a change in the molecular
composition of each substance - answers - c. A homogeneous mixture of two or more
substances that do not chemically react with each other
2. A solution is composed of 1% sodium chloride and 0.5% potassium chloride in
distilled water. Which substance(s) would be considered the solute?
A. Potassium chloride
B. Sodium chloride
C. Potassium chloride and sodium chloride
D. Water - answers - c. Potassium chloride and sodium chloride
3. A solution in which the solvent is water is referred to as
A. Aqueous.
B. Dissolved.
C. Liquid.
D. Soluble. - answers - a. Aqueous.
4. A vial of 3 mg silver chloride (agcl) is poured into a flask containing 100 ml water and
mixed. After 24 hours, 2.9 mg of silver chloride remains as a solid at the bottom of the
flask. Which of the following terms best describes the ability of silver chloride to dissolve
in water?
A. Insoluble
B. Partly soluble
C. Soluble
D. Sparingly soluble - answers - d. Sparingly soluble
5. What is the risk of reporting an incorrect concentration for a patient sample? A.
Administration of an inappropriate drug
B. Misdiagnosis of an illness
C. Both of the above
D. Neither of the above - answers - c. Both of the above
, 6. The concentration of an aqueous glucose solution is noted as 25% glucose (w/v).
What does this tell us about the amount of glucose in the solution?
A. There are 0.25 grams of glucose in every 100 ml of solution.
B. There are 2.5 grams of glucose in every 100 ml of solution.
C. There are 25 grams of glucose in every 100 ml of solution.
D. There are 250 grams of glucose in every 100 ml of solution. - answers - c. There are
25 grams of glucose in every 100 ml of solution.
7. The concentration of a sodium chloride (nacl) solution is defined as 10% nacl (w/w).
What does this tell us about the amount of nacl in the solution?
A. There are 10 grams of nacl in every 10% of solution.
B. There are 10 grams of nacl in every 100 grams of solution.
C. There are 10 grams of nacl in every 100 ml of solution.
D. There are 10 grams of nacl in every 100 ounces of solution. - answers - b. There are
10 grams of nacl in every 100 grams of solution.
8. A solution of aqueous ferric chloride has a concentration of 15 ppm. What does this
tell us about the amount of ferric chloride in the solution?
A. There are 15 grams of ferric chloride in every 1,000,000 grams of solution.
B. There are 15 grams of ferric chloride in every 1,000,000 ml of solution.
C. There are 15 ml of ferric chloride in every 1,000,000 ml of solution.
D. Both a and b are correct. - answers - d. Both a and b are correct.
9. When a concentration is expressed in terms of molarity, what does it tell us about the
solution?
A. The number of moles of a solute present in 1 liter of solution
B. The number of moles of a solute present in 1,000 grams of solution
C. The number of osmoles of a solute present in 1 liter of solution
D. The number of osmoles of a solute present in 1,000 grams of solution - answers - a.
The number of moles of a solute present in 1 liter of solution
10. A solution of sodium chloride (nacl. Is calculated to be 0.5 m at 37°c. The solution
was placed in an 18°c refrigerator for 24 hours and the molarity was recalculated. What
would you expect the molarity of the solution to be?
A. 0.5 m
B. Greater than 0.5 m
C. Less than 0.5 m
D. It cannot be determined from the information given. - answers - b. Greater than 0.5 m
11. Consider the following equation:
8.5 moles glucose
Concentration of glucose = kilogram 0.1 water
What are the units of the value calculated by this equation?
A. Molal
B. Molar
C. V/v
