Question 1

When alcohol is mixed with water which is the solvent?

Accepted Answer

A)  the alcohol 
B)  the water 
C)  The substance present in larger amount. 
D)  The substance present in smaller amount. 
A)  the alcohol 
B)  the water 
C)  The substance present in larger amount. 
D)  The substance present in smaller amount.

Question 2

On a stove we have two pots of water at the boiling point. Pot 1 contains 1 L of water and pot 2 contains 2 L of water. Which of the following statements is true?

Accepted Answer

A)  Pot 2 is at a higher temperature than pot 1. 
B)  Pot 2 has a larger thermal energy content than pot 1. 
C)  Both have the same thermal energy content. 
D)  Both a are b are true. 
A)  Pot 2 is at a higher temperature than pot 1. 
B)  Pot 2 has a larger thermal energy content than pot 1. 
C)  Both have the same thermal energy content. 
D)  Both a are b are true.

Question 3

At high altitudes atmospheric pressure is lower than at sea level. Which of the following is true?

Accepted Answer

A)  Boiling water is cooler in Denver than in New York. 
B)  Boiling water is hotter in Denver than in New York. 
C)  Water boils at the same temperature in Denver and New York. 
D)  We cannot predict the relationship between the boiling points in the two cities. 
A)  Boiling water is cooler in Denver than in New York. 
B)  Boiling water is hotter in Denver than in New York. 
C)  Water boils at the same temperature in Denver and New York. 
D)  We cannot predict the relationship between the boiling points in the two cities.

Question 4

Convert 0.917 atm to millibars.

Accepted Answer

A)  697 millibars 
B)  929 millibars 
C)  523 millibars 
D)  1.223 millibars 
A)  697 millibars 
B)  929 millibars 
C)  523 millibars 
D)  1.223 millibars

Question 5

Which of the following phase changes does not involve a solid?

Accepted Answer

A)  evaporation 
B)  melting 
C)  sublimation 
D)  freezing 
A)  evaporation 
B)  melting 
C)  sublimation 
D)  freezing

Question 6

Which of the following does not affect the boiling point of a liquid?

Accepted Answer

A)  the formula weight of the liquid molecules 
B)  the shape of the liquid molecules 
C)  the intermolecular forces between the liquid molecules 
D)  All of the above affect the boiling point. 
A)  the formula weight of the liquid molecules 
B)  the shape of the liquid molecules 
C)  the intermolecular forces between the liquid molecules 
D)  All of the above affect the boiling point.

Question 7

Which of the following molecules cannot engage in hydrogen bonding?

Accepted Answer

A)  CH4 
B)  NH3 
C)  H2O 
D)  All of them can hydrogen bond. 
A)  CH4 
B)  NH3 
C)  H2O 
D)  All of them can hydrogen bond.

Question 8

Consider the following three substances.       A B C
Enter the letter of the appropriate substance in the blank provided. If none applies, enter the word none.
-The substance capable of hydrogen bonding is _____.

Accepted Answer

The answer of Consider the following three substances.  ...

Question 9

Consider the following three substances.       A B C
Enter the letter of the appropriate substance in the blank provided. If none applies, enter the word none.
-Substance(s) that _____ is(are) soluble in water.

Accepted Answer

The answer of Consider the following three substances.  ...

Question 10

In which state of matter are the attractive forces between molecules the weakest?

Accepted Answer

A)  solid 
B)  liquid 
C)  gas 
D)  None, the attractive forces are about the same in all. 
A)  solid 
B)  liquid 
C)  gas 
D)  None, the attractive forces are about the same in all.

Question 11

A metal gas cylinder is filled with compressed helium at a pressure 2.50 atm when the temperature is 37°C. What is the temperature in Celsius degrees when the pressure in the cylinder changes to 1.78 atm?

Accepted Answer

A)  162 °C 
B)  -52 °C 
C)  221 °C 
D)  26 °C 
A)  162 °C 
B)  -52 °C 
C)  221 °C 
D)  26 °C

Question 12

Ethylene dichloride is an effective cooling agent when allowed to evaporate. The heat of vaporization is 85.3 cal/g. How much heat could be removed from the skin if 4.25g of ethylene dichloride were sprayed on and allowed to evaporate?

Accepted Answer

A)    cal 
B)    cal 
C)    cal 
D)    
A)    cal 
B)    cal 
C)    cal 
D)

Question 13

Consider the following three substances.       A B C
Enter the letter of the appropriate substance in the blank provided. If none applies, enter the word none.
-Substance _____ would form a heterogeneous mixture with water.

Accepted Answer

The answer of Consider the following three substances.  ...

Question 14

Potassium phosphate, K3PO4, is a solid at room temperature and is soluble in water. Which of the following statements is correct?

Accepted Answer

A)  K3PO4 is an electrolyte. 
B)  K+ and PO43- ions are solvated by water. 
C)  K3PO4 completely dissociates in water. 
D)  All of the above are correct. 
A)  K3PO4 is an electrolyte. 
B)  K+ and PO43- ions are solvated by water. 
C)  K3PO4 completely dissociates in water. 
D)  All of the above are correct.

When alcohol is mixed with water which is the solvent?

On a stove we have two pots of water at the boiling point. Pot 1 contains 1 L of water and pot 2 contains 2 L of water. Which of the following statements is true?

At high altitudes atmospheric pressure is lower than at sea level. Which of the following is true?

Convert 0.917 atm to millibars.

Which of the following phase changes does not involve a solid?

Which of the following does not affect the boiling point of a liquid?

Which of the following molecules cannot engage in hydrogen bonding?

Consider the following three substances. A B C Enter the letter of the appropriate substance in the blank provided. If none applies, enter the word none. -The substance capable of hydrogen bonding is _____.

Consider the following three substances. A B C Enter the letter of the appropriate substance in the blank provided. If none applies, enter the word none. -Substance(s) that _____ is(are) soluble in water.

In which state of matter are the attractive forces between molecules the weakest?

A metal gas cylinder is filled with compressed helium at a pressure 2.50 atm when the temperature is 37°C. What is the temperature in Celsius degrees when the pressure in the cylinder changes to 1.78 atm?

Ethylene dichloride is an effective cooling agent when allowed to evaporate. The heat of vaporization is 85.3 cal/g. How much heat could be removed from the skin if 4.25g of ethylene dichloride were sprayed on and allowed to evaporate?

Consider the following three substances. A B C Enter the letter of the appropriate substance in the blank provided. If none applies, enter the word none. -Substance _____ would form a heterogeneous mixture with water.

Potassium phosphate, K₃PO₄, is a solid at room temperature and is soluble in water. Which of the following statements is correct?

Measurements in Science and Medicine

Atoms, Elements, and Compounds

Chemical Bonds

Solution Concentration

Chemical Reactions

Acids and Bases

Nuclear Chemistry

Hydrocarbons: an Introduction to Organic Molecules

Hydration, Dehydration, and Alcohols

Carbonyl Compounds and Redox Reactions

Organic Acids and Bases

Condensation and Hydrolysis Reactions

Proteins

Carbohydrates

Lipids and Membranes

Nucleic Acids, Protein Synthesis, and Heredity

Filters

Exam 4: Energy and Physical Properties

When alcohol is mixed with water which is the solvent?

On a stove we have two pots of water at the boiling point. Pot 1 contains 1 L of water and pot 2 contains 2 L of water. Which of the following statements is true?

At high altitudes atmospheric pressure is lower than at sea level. Which of the following is true?

Convert 0.917 atm to millibars.

Which of the following phase changes does not involve a solid?

Which of the following does not affect the boiling point of a liquid?

Which of the following molecules cannot engage in hydrogen bonding?

Consider the following three substances. A B C Enter the letter of the appropriate substance in the blank provided. If none applies, enter the word none. -The substance capable of hydrogen bonding is _____.

Consider the following three substances. A B C Enter the letter of the appropriate substance in the blank provided. If none applies, enter the word none. -Substance(s) that _____ is(are) soluble in water.

In which state of matter are the attractive forces between molecules the weakest?

A metal gas cylinder is filled with compressed helium at a pressure 2.50 atm when the temperature is 37°C. What is the temperature in Celsius degrees when the pressure in the cylinder changes to 1.78 atm?

Ethylene dichloride is an effective cooling agent when allowed to evaporate. The heat of vaporization is 85.3 cal/g. How much heat could be removed from the skin if 4.25g of ethylene dichloride were sprayed on and allowed to evaporate?

Consider the following three substances. A B C Enter the letter of the appropriate substance in the blank provided. If none applies, enter the word none. -Substance _____ would form a heterogeneous mixture with water.

Potassium phosphate, K3PO4, is a solid at room temperature and is soluble in water. Which of the following statements is correct?

Measurements in Science and Medicine

Atoms, Elements, and Compounds

Chemical Bonds

Solution Concentration

Chemical Reactions

Acids and Bases

Nuclear Chemistry

Hydrocarbons: an Introduction to Organic Molecules

Hydration, Dehydration, and Alcohols

Carbonyl Compounds and Redox Reactions

Organic Acids and Bases

Condensation and Hydrolysis Reactions

Proteins

Carbohydrates

Lipids and Membranes

Nucleic Acids, Protein Synthesis, and Heredity

Filters

Potassium phosphate, K₃PO₄, is a solid at room temperature and is soluble in water. Which of the following statements is correct?