Question 1

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

Accepted Answer

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

Question 2

A typical ______ contains aggregates of atoms, molecules, or ions.It can also contain large molecules distributed throughout the medium.

Accepted Answer

A)  solution 
B)  solvent 
C)  mixture 
D)  colloidal dispersion 
E)  suspension 
A)  solution 
B)  solvent 
C)  mixture 
D)  colloidal dispersion 
E)  suspension

Question 3

How many ions of each type are produced when Na3PO4 is dissolved in aqueous solution?

Accepted Answer

A)  1 Na3PO4 
B)  3 Na+, 1 P+, 4 O2- 
C)  3 Na+, 4 PO43- 
D)  3 Na+, 1 PO43- 
E)  1 Na+, 1 PO4- 
A)  1 Na3PO4 
B)  3 Na+, 1 P+, 4 O2- 
C)  3 Na+, 4 PO43- 
D)  3 Na+, 1 PO43- 
E)  1 Na+, 1 PO4-

Question 4

A _______ settles after mixing and contains visible particles.

Accepted Answer

A)  solution 
B)  solvent 
C)  homogenous mixture 
D)  colloidal dispersion 
E)  suspension 
A)  solution 
B)  solvent 
C)  homogenous mixture 
D)  colloidal dispersion 
E)  suspension

Question 5

In a colloidal dispersion, the major component is called the

Accepted Answer

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

Question 6

A wine label states that it is 12 proof, meaning that it contains 6% ethanol.According to this information

Accepted Answer

A)  ethanol is a solute in wine, and water is the solvent. 
B)  ethanol is a solvent in wine, and water is the solute. 
C)  ethanol and water are both solvents in wine. 
D)  ethanol and water are both solutes in wine. 
E)  wine does not contain any solutes. 
A)  ethanol is a solute in wine, and water is the solvent. 
B)  ethanol is a solvent in wine, and water is the solute. 
C)  ethanol and water are both solvents in wine. 
D)  ethanol and water are both solutes in wine. 
E)  wine does not contain any solutes.

Question 7

A solute dissolving in a solvent is a _______ change because _______broken in the process.

Accepted Answer

A)  physical; covalent bonds are 
B)  chemical; covalent bonds are 
C)  chemical; ionic attractions are 
D)  physical; covalent bonds are not 
E)  chemical; covalent bonds are not 
A)  physical; covalent bonds are 
B)  chemical; covalent bonds are 
C)  chemical; ionic attractions are 
D)  physical; covalent bonds are not 
E)  chemical; covalent bonds are not

Question 8

A student adds 0.250 L of 200 mM buffer stock solution to a volumetric flask and dilutes the stock to 2.0 L.What is the final concentration of the solution?

Accepted Answer

A)  0.22 mM 
B)  220 mM 
C)  22 mM 
D)  25 mM 
E)  2.5 mM 
A)  0.22 mM 
B)  220 mM 
C)  22 mM 
D)  25 mM 
E)  2.5 mM

Question 9

How many moles of glucose are in 0.82 L of a 0.13 M glucose solution?

Accepted Answer

A)  0.11 mol 
B)  0.33 mol 
C)  6.3 mol 
D)  1.9 mol 
E)  0.22 mol 
A)  0.11 mol 
B)  0.33 mol 
C)  6.3 mol 
D)  1.9 mol 
E)  0.22 mol

Question 10

Which substance is NOT physiologically important?

Accepted Answer

A)  CO2 
B)  Na+ 
C)  glucose 
D)  HCO3- 
E)  All of the above are physiologically important substances. 
A)  CO2 
B)  Na+ 
C)  glucose 
D)  HCO3- 
E)  All of the above are physiologically important substances.

Question 11

According to a blood test, a patient has a blood calcium concentration of 9.7 mg/dL.Express this concentration in units of mg/mL (milligrams per milliliter).

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

Question 12

Is the solution of MgCl2 in water an electrolyte?

Accepted Answer

A)  Yes, because when MgCl2 dissolves, it forms ions. 
B)  Yes, because the MgCl2 undergoes a chemical change in solution. 
C)  Yes, because MgCl2 and water react with each other. 
D)  No, because MgCl2 does not form ions. 
E)  No, because MgCl2 in water does not conduct electricity. 
A)  Yes, because when MgCl2 dissolves, it forms ions. 
B)  Yes, because the MgCl2 undergoes a chemical change in solution. 
C)  Yes, because MgCl2 and water react with each other. 
D)  No, because MgCl2 does not form ions. 
E)  No, because MgCl2 in water does not conduct electricity.

Question 13

Capsaicin is responsible for the heat of peppers.It is common practice to fry capsaicin in oil prior to eating.Which part of the capsaicin molecule forms an intermolecular attractive force with oil, a nonpolar solvent?

Accepted Answer

A)  a 
B)  b 
C)  c 
D)  d 
E)  All of these interact with oil. 
A)  a 
B)  b 
C)  c 
D)  d 
E)  All of these interact with oil.

Question 14

Does ethanol, a polar organic molecule that can hydrogen bond, dissolve in water?

Accepted Answer

A)  Yes, because they are both liquids. 
B)  Yes, because they have similar polarities. 
C)  No, because they are both liquids. 
D)  No, because they have similar polarities. 
E)  No, because they do not have similar polarities. 
A)  Yes, because they are both liquids. 
B)  Yes, because they have similar polarities. 
C)  No, because they are both liquids. 
D)  No, because they have similar polarities. 
E)  No, because they do not have similar polarities.

Question 15

Which statement describes one way in which osmosis and dialysis are similar?

Accepted Answer

A)  Both involve the movement of molecules from low to high concentration. 
B)  Both involve the movement of molecules from high to low concentration. 
C)  Both involve the passage of a solute through a semipermeable membrane. 
D)  Both require an input of energy. 
E)  Osmosis and dialysis are in no way similar. 
A)  Both involve the movement of molecules from low to high concentration. 
B)  Both involve the movement of molecules from high to low concentration. 
C)  Both involve the passage of a solute through a semipermeable membrane. 
D)  Both require an input of energy. 
E)  Osmosis and dialysis are in no way similar.

Question 16

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

Question 17

Jane Doe has a blood glucose level of 92 mg/dL.How many grams of glucose does she have in 1 L of her blood?

Accepted Answer

A)  0.00092 g 
B)  0.0092 g 
C)  0.092 g 
D)  0.92 g 
E)  9.2 g 
A)  0.00092 g 
B)  0.0092 g 
C)  0.092 g 
D)  0.92 g 
E)  9.2 g

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

A typical ______ contains aggregates of atoms, molecules, or ions.It can also contain large molecules distributed throughout the medium.

How many ions of each type are produced when Na₃PO₄ is dissolved in aqueous solution?

A _______ settles after mixing and contains visible particles.

In a colloidal dispersion, the major component is called the

A wine label states that it is 12 proof, meaning that it contains 6% ethanol.According to this information

A solute dissolving in a solvent is a _ change because _broken in the process.

A student adds 0.250 L of 200 mM buffer stock solution to a volumetric flask and dilutes the stock to 2.0 L.What is the final concentration of the solution?

How many moles of glucose are in 0.82 L of a 0.13 M glucose solution?

Which substance is NOT physiologically important?

According to a blood test, a patient has a blood calcium concentration of 9.7 mg/dL.Express this concentration in units of mg/mL (milligrams per milliliter).

Is the solution of MgCl₂ in water an electrolyte?

Capsaicin is responsible for the heat of peppers.It is common practice to fry capsaicin in oil prior to eating.Which part of the capsaicin molecule forms an intermolecular attractive force with oil, a nonpolar solvent?

Does ethanol, a polar organic molecule that can hydrogen bond, dissolve in water?

Which statement describes one way in which osmosis and dialysis are similar?

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

Jane Doe has a blood glucose level of 92 mg/dL.How many grams of glucose does she have in 1 L of her blood?

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

Exam 8: Mixtures, Solution Concentrations, and Diffusion

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

A typical ______ contains aggregates of atoms, molecules, or ions.It can also contain large molecules distributed throughout the medium.

How many ions of each type are produced when Na3PO4 is dissolved in aqueous solution?

A _______ settles after mixing and contains visible particles.

In a colloidal dispersion, the major component is called the

A wine label states that it is 12 proof, meaning that it contains 6% ethanol.According to this information

A solute dissolving in a solvent is a _______ change because _______broken in the process.

A student adds 0.250 L of 200 mM buffer stock solution to a volumetric flask and dilutes the stock to 2.0 L.What is the final concentration of the solution?

How many moles of glucose are in 0.82 L of a 0.13 M glucose solution?

Which substance is NOT physiologically important?

According to a blood test, a patient has a blood calcium concentration of 9.7 mg/dL.Express this concentration in units of mg/mL (milligrams per milliliter).

Is the solution of MgCl2 in water an electrolyte?

Capsaicin is responsible for the heat of peppers.It is common practice to fry capsaicin in oil prior to eating.Which part of the capsaicin molecule forms an intermolecular attractive force with oil, a nonpolar solvent?

Does ethanol, a polar organic molecule that can hydrogen bond, dissolve in water?

Which statement describes one way in which osmosis and dialysis are similar?

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

Jane Doe has a blood glucose level of 92 mg/dL.How many grams of glucose does she have in 1 L of her blood?

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

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

How many ions of each type are produced when Na₃PO₄ is dissolved in aqueous solution?

A solute dissolving in a solvent is a _ change because _broken in the process.

Is the solution of MgCl₂ in water an electrolyte?