Question 1

Drinking water from a well is discovered to have an arsenic concentration of 3.4 F1F1F1S1F1F1F10 10-4 g of arsenic per liter. Does this value exceed the permissible level of arsenic in drinking water of 10 ppb?

Accepted Answer

A)  No, 3.4 F1F1F1S1F1F1F10 10-4 g is lower than the permissible value of 1.0 F1F1F1S1F1F1F10 10-5 g/L. 
B)  Yes, 3.4 F1F1F1S1F1F1F10 10-4 g is higher than the permissible value of 1.0 F1F1F1S1F1F1F10 10-5 g/L. 
C)  No, 3.4 F1F1F1S1F1F1F10 10-4 g is lower than the permissible value of 1.0 F1F1F1S1F1F1F10 10-3 g/L. 
D)  Yes, 3.4 F1F1F1S1F1F1F10 10-4 g is higher than the permissible value of 1.0 F1F1F1S1F1F1F10 10-3 g/L. 
E)  It is not possible to determine the answer from the information given.

Question 2

In a colloidal dispersion, the major component is called the

Accepted Answer

A)  solvent. 
B)  solute. 
C)  medium. 
D)  colloid. 
E)  solution.

Question 3

Which of the following pictures best represents ethanol dissolved in water? Note that dashed lines represent hydrogen bonds.

Accepted Answer

A)  
B)  
C)  
D)  
E)

Question 4

Which pair of solvents is NOT miscible?

Accepted Answer

A)  hexane and water 
B)  water and methanol 
C)  methanol and ethanol 
D)  hexane and butane 
E)  ethylene glycol (HOCH2CH2OH) and ethanol

Question 5

Which of the following is NOT an electrolyte?

Accepted Answer

A)  Na+ 
B)  HCO3F1F1F1S1F1F1F10 
C)  Mg2+ 
D)  HOCH2CH3 
E)  All of the above are electrolytes.

Question 6

Which of the following statements explains why whole blood has characteristics of a solution, a colloid, and a suspension?

Accepted Answer

A)  Whole blood separates upon centrifugation. 
B)  Whole blood contains many different particles that don't settle out upon standing. 
C)  Whole blood contains many soluble molecules. 
D)  Whole blood contains particles that range in size and solubility. 
E)  Actually, whole blood is only a suspension because it contains red blood cells.

Question 7

Which container would be the best for preparing 1 L of a 10 g NaCl/L solution? In other words, which container will give the most accurate and precise measure of a large volume?

Accepted Answer

A)  volumetric flask 
B)  beaker 
C)  graduated cylinder 
D)  Erlenmeyer flask 
E)  syringe

Question 8

Cephadrine is one of many antibiotics that act by inhibiting bacterial cell wall synthesis. If a typical daily dosage is 660 mg, how many milliliters of 75 mg/mL suspension of cephadrine should be administered daily?

Accepted Answer

A)  660 mL 
B)  75 mL 
C)  0.0088 mL 
D)  8.8 mL 
E)  1.1 mL

Question 9

The concentration of an adrenalin chloride solution, used to treat acute allergic responses, is 15 mg in 30. mL. Express this concentration in mg/mL (mg per milliliter).

Accepted Answer

A)  0.50 mg/mL 
B)  2.0 mg/ml 
C)  5.0 mg/mL 
D)  45 mg/mL 
E)  450 mg/mL

Question 10

How many moles of magnesium chloride (MgCl2) are in 1.31 L of 0.38 M MgCl2?

Accepted Answer

A)  0.498 moles 
B)  0.50 moles 
C)  1.49 moles 
D)  1.5 moles 
E)  0.29 moles

Question 11

Consider the two containers below, which are separated by a semipermeable membrane that only allows the passage of small solutes. If A contains 6% NaCl in water and B contains 3% NaCl in water, which of the following will occur?

Accepted Answer

A)  The volume of water in A will increase. 
B)  The volume of water in B will increase. 
C)  NaCl will flow from A to B. 
D)  NaCl will flow from B to A. 
E)  Nothing will happen.

Question 12

A 1% epinephrine solution is delivered by inhalation to treat asthma. This concentration is equivalent to

Accepted Answer

A)  1 g epinephrine dissolved in 100 mL of water. 
B)  0.001 g epinephrine dissolved in 1 L of water. 
C)  1 mg epinephrine dissolved in 100 mL of water. 
D)  0.001 mg epinephrine dissolved in 1 L of water. 
E)  1 μg epinephrine dissolved in 100 mL of water.

Question 13

How many grams of dextrose are in 100 mL of D5W (5.0% dextrose)?

Accepted Answer

A)  50 g 
B)  5.0 g 
C)  0.50 g 
D)  0.050 g 
E)  0.0050 g

Question 14

Which of the following does NOT occur when an electrolyte dissolves in water?

Accepted Answer

A)  A chemical change occurs. 
B)  The positive and negative ions separate from each other. 
C)  The positive ions interact with the oxygen of water. 
D)  The negative ions interact with the hydrogen of water. 
E)  The resulting solution conducts electricity.

Question 15

What volume of a 6.0% solution of ethanol contain 3.0 g of ethanol?

Accepted Answer

A)  5.0 mL 
B)  6.0 mL 
C)  10 mL 
D)  30 mL 
E)  50 mL

Question 16

According to a blood test, a patient has a blood calcium concentration of 9.7 mg/dL. Express this concentration in mg/mL.

Accepted Answer

A)  970 mg/mL 
B)  97 mg/mL 
C)  9.7 mg/mL 
D)  0.97 mg/mL 
E)  0.097 mg/mL

Question 17

According to the following table, are Jane Doe's blood test values within normal limits?

Accepted Answer

A)  Yes. 
B)  No, glucose is too concentrated. 
C)  No, glucose is too dilute. 
D)  No, chloride is too concentrated. 
E)  No, chloride is too dilute.

Question 18

In a solution, the component present in a larger amount is called the

Accepted Answer

A)  solvent. 
B)  solute. 
C)  medium. 
D)  colloid. 
E)  solution.

Question 19

Which of the following solutes is most soluble in hexane?

Accepted Answer

A)  pentane, CH3CH2CH2CH2CH3 
B)  NaCl 
C)  KCl 
D)  methanol, CH3OH 
E)  acetic acid, CH3COOH

Question 20

If A contains 6% NaCl in water and B contains 3% NaCl in water, which of the following will occur?

Accepted Answer

A)  Water will flow from A to B. 
B)  Water will flow from B to A. 
C)  NaCl will flow from A to B. 
D)  NaCl will flow from B to A. 
E)  Nothing will happen.

Exam 8: Solutions, Colloids and Membranes

Drinking water from a well is discovered to have an arsenic concentration of 3.4  10^-4g of arsenic per liter. Does this value exceed the permissible level of arsenic in drinking water of 10 ppb?

In a colloidal dispersion, the major component is called the

Which of the following pictures best represents ethanol dissolved in water? Note that dashed lines represent hydrogen bonds.

Which pair of solvents is NOT miscible?

Which of the following is NOT an electrolyte?

Which of the following statements explains why whole blood has characteristics of a solution, a colloid, and a suspension?

Which container would be the best for preparing 1 L of a 10 g NaCl/L solution? In other words, which container will give the most accurate and precise measure of a large volume?

Cephadrine is one of many antibiotics that act by inhibiting bacterial cell wall synthesis. If a typical daily dosage is 660 mg, how many milliliters of 75 mg/mL suspension of cephadrine should be administered daily?

The concentration of an adrenalin chloride solution, used to treat acute allergic responses, is 15 mg in 30. mL. Express this concentration in mg/mL (mg per milliliter) .

How many moles of magnesium chloride (MgCl₂) are in 1.31 L of 0.38 M MgCl₂?

Consider the two containers below, which are separated by a semipermeable membrane that only allows the passage of small solutes. If A contains 6% NaCl in water and B contains 3% NaCl in water, which of the following will occur?

A 1% epinephrine solution is delivered by inhalation to treat asthma. This concentration is equivalent to

How many grams of dextrose are in 100 mL of D₅W (5.0% dextrose) ?

Which of the following does NOT occur when an electrolyte dissolves in water?

What volume of a 6.0% solution of ethanol contain 3.0 g of ethanol?

According to a blood test, a patient has a blood calcium concentration of 9.7 mg/dL. Express this concentration in mg/mL.

According to the following table, are Jane Doe's blood test values within normal limits?

In a solution, the component present in a larger amount is called the

Which of the following solutes is most soluble in hexane?

If A contains 6% NaCl in water and B contains 3% NaCl in water, which of the following will occur?

Exam 8: Solutions, Colloids and Membranes

Drinking water from a well is discovered to have an arsenic concentration of 3.4  10-4 g of arsenic per liter. Does this value exceed the permissible level of arsenic in drinking water of 10 ppb?

In a colloidal dispersion, the major component is called the

Which of the following pictures best represents ethanol dissolved in water? Note that dashed lines represent hydrogen bonds.

Which pair of solvents is NOT miscible?

Which of the following is NOT an electrolyte?

Which of the following statements explains why whole blood has characteristics of a solution, a colloid, and a suspension?

Which container would be the best for preparing 1 L of a 10 g NaCl/L solution? In other words, which container will give the most accurate and precise measure of a large volume?

Cephadrine is one of many antibiotics that act by inhibiting bacterial cell wall synthesis. If a typical daily dosage is 660 mg, how many milliliters of 75 mg/mL suspension of cephadrine should be administered daily?

The concentration of an adrenalin chloride solution, used to treat acute allergic responses, is 15 mg in 30. mL. Express this concentration in mg/mL (mg per milliliter) .

How many moles of magnesium chloride (MgCl2) are in 1.31 L of 0.38 M MgCl2?

Consider the two containers below, which are separated by a semipermeable membrane that only allows the passage of small solutes. If A contains 6% NaCl in water and B contains 3% NaCl in water, which of the following will occur?

A 1% epinephrine solution is delivered by inhalation to treat asthma. This concentration is equivalent to

How many grams of dextrose are in 100 mL of D5W (5.0% dextrose) ?

Which of the following does NOT occur when an electrolyte dissolves in water?

What volume of a 6.0% solution of ethanol contain 3.0 g of ethanol?

According to a blood test, a patient has a blood calcium concentration of 9.7 mg/dL. Express this concentration in mg/mL.

According to the following table, are Jane Doe's blood test values within normal limits?

In a solution, the component present in a larger amount is called the

Which of the following solutes is most soluble in hexane?

If A contains 6% NaCl in water and B contains 3% NaCl in water, which of the following will occur?

Drinking water from a well is discovered to have an arsenic concentration of 3.4  10^-4g of arsenic per liter. Does this value exceed the permissible level of arsenic in drinking water of 10 ppb?

How many moles of magnesium chloride (MgCl₂) are in 1.31 L of 0.38 M MgCl₂?

How many grams of dextrose are in 100 mL of D₅W (5.0% dextrose) ?