Question 1

A solution is 0.0433 m LiF.What is the molarity of the solution if the density is 1.10 g/mL?

Accepted Answer

A) 0.0441 M 
B) 0.0390 M 
C) 0.0519 M 
D) 0.0476 M 
E) 0.0417 M 
A) 0.0441 M 
B) 0.0390 M 
C) 0.0519 M 
D) 0.0476 M 
E) 0.0417 M

Question 2

What mass (in g)of NH3 must be dissolved in 475 g of methanol to make a 0.250 m solution?

Accepted Answer

A) 2.02 g 
B) 4.94 g 
C) 1.19 g 
D) 8.42 g 
E) 1.90 g 
A) 2.02 g 
B) 4.94 g 
C) 1.19 g 
D) 8.42 g 
E) 1.90 g

Question 3

Identify the gas that is dissolved in carbonated sodas.

Accepted Answer

A) carbon dioxide 
B) oxygen 
C) nitrogen 
D) carbon monoxide 
E) hydrogen 
A) carbon dioxide 
B) oxygen 
C) nitrogen 
D) carbon monoxide 
E) hydrogen

Question 4

Determine the freezing point depression of a solution that contains 30.7 g glycerin (C3H8O3,molar mass = 92.09 g/mol)in 376 mL of water.Some possibly useful constants for water are Kf = 1.86°C/m and Kb = 0.512°C/m .

Accepted Answer

A) 0.887°C 
B) 1.65°C 
C) 3.33°C 
D) 4.95°C 
E) 0.654°C 
A) 0.887°C 
B) 1.65°C 
C) 3.33°C 
D) 4.95°C 
E) 0.654°C

Question 5

A solution is prepared by dissolving 76.3 g NaI in 545 g of water.Determine the mole fraction of NaI if the final volume of the solution is 576 mL.

Accepted Answer

A) 6.04 × 10-3 
B) 1.65 × 10-2 
C) 1.40 × 10-3 
D) 1.32 × 10-2 
E) 8.84 × 10-2 
A) 6.04 × 10-3 
B) 1.65 × 10-2 
C) 1.40 × 10-3 
D) 1.32 × 10-2 
E) 8.84 × 10-2

Question 6

Red blood cells are placed in a hyperosmotic solution.What will happen to the blood cells?

Accepted Answer

A) They will shrivel. 
B) They will swell. 
C) Some will swell and some will shrivel. 
D) They will remain unchanged. 
A) They will shrivel. 
B) They will swell. 
C) Some will swell and some will shrivel. 
D) They will remain unchanged.

Question 7

Choose the aqueous solution below with the lowest freezing point.These are all solutions of nonvolatile solutes and you should assume ideal van't Hoff factors where applicable.

Accepted Answer

A) 0.075 m NaI 
B) 0.075 m (NH4)3PO4 
C) 0.075 m NaBrO4 
D) 0.075 m LiCN 
E) 0.075 m KNO2 
A) 0.075 m NaI 
B) 0.075 m (NH4)3PO4 
C) 0.075 m NaBrO4 
D) 0.075 m LiCN 
E) 0.075 m KNO2

A solution is 0.0433 m LiF.What is the molarity of the solution if the density is 1.10 g/mL?

What mass (in g)of NH₃ must be dissolved in 475 g of methanol to make a 0.250 m solution?

Identify the gas that is dissolved in carbonated sodas.

Determine the freezing point depression of a solution that contains 30.7 g glycerin (C₃H₈O₃,molar mass = 92.09 g/mol)in 376 mL of water.Some possibly useful constants for water are K_f = 1.86°C/m and K_b = 0.512°C/m .

A solution is prepared by dissolving 76.3 g NaI in 545 g of water.Determine the mole fraction of NaI if the final volume of the solution is 576 mL.

Red blood cells are placed in a hyperosmotic solution.What will happen to the blood cells?

Choose the aqueous solution below with the lowest freezing point.These are all solutions of nonvolatile solutes and you should assume ideal van't Hoff factors where applicable.

Matter, Measurement, and Problem Solving

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Molecules, Compounds and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding II: Molecular Shapes, Valence Bond Theory, and

Liquids, Solids, and Intermolecular Forces

Chemical Kinetics

Chemical Equilibrium

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Aqueous Ionic Equilibrium

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Exam 12: Solutions

A solution is 0.0433 m LiF.What is the molarity of the solution if the density is 1.10 g/mL?

What mass (in g)of NH3 must be dissolved in 475 g of methanol to make a 0.250 m solution?

Identify the gas that is dissolved in carbonated sodas.

Determine the freezing point depression of a solution that contains 30.7 g glycerin (C3H8O3,molar mass = 92.09 g/mol)in 376 mL of water.Some possibly useful constants for water are Kf = 1.86°C/m and Kb = 0.512°C/m .

A solution is prepared by dissolving 76.3 g NaI in 545 g of water.Determine the mole fraction of NaI if the final volume of the solution is 576 mL.

Red blood cells are placed in a hyperosmotic solution.What will happen to the blood cells?

Choose the aqueous solution below with the lowest freezing point.These are all solutions of nonvolatile solutes and you should assume ideal van't Hoff factors where applicable.

Matter, Measurement, and Problem Solving

Atoms and Elements

Molecules, Compounds and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding II: Molecular Shapes, Valence Bond Theory, and

Liquids, Solids, and Intermolecular Forces

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Filters

What mass (in g)of NH₃ must be dissolved in 475 g of methanol to make a 0.250 m solution?

Determine the freezing point depression of a solution that contains 30.7 g glycerin (C₃H₈O₃,molar mass = 92.09 g/mol)in 376 mL of water.Some possibly useful constants for water are K_f = 1.86°C/m and K_b = 0.512°C/m .