Question 1

Define compound.

Accepted Answer

A compound is a substance comp

Question 2

An organic liquid has a density of 0.8 g/cm3.What is the mass of a 42.0 mL sample of this liquid?

Accepted Answer

Question 3

The density of lead is 11.4 g/cm3. Express this density in pounds per cubic foot.

Accepted Answer

Question 4

What will be the cost of gasoline for a 4,700-mile automobile trip if the car gets 41 miles per gallon, and the average price of gas is $2.79 per gallon?

Accepted Answer

The answer of What will be the cost of gasoline...

Question 5

You just measured a sugar cube and obtained the following information:
mass = 3.48 g
height = length = width = 1.3 cm
Determine the volume and density of the cube.Suppose the sugar cube was added to a cup of water.Before it dissolves, will the sugar cube float or sink to the bottom?

Accepted Answer

Volume of the sugar cube = 2.2

Question 6

Classify the following as an element, a compound, or a mixture: Chicken broth.

Accepted Answer

The answer of Classify the following as an element, a...

Question 7

A block of iron has a mass of 483 g. What is the mass of a block of graphite that has the same volume as the block of iron? The following densities at 25$\circ$C are provided: magnesium, 1.7 g/cm3 ; graphite, 1.8 g/cm3 ; iron, 7.9 g/cm3.

Accepted Answer

A) 110 g 
B) 2120 g 
C) 6870 g 
D) 34 g 
E) none of them are within 10 g of the right answer. 
A) 110 g 
B) 2120 g 
C) 6870 g 
D) 34 g 
E) none of them are within 10 g of the right answer.

Question 8

The SI prefixes kilo and centi represent, respectively:

Accepted Answer

A) 103 and 10-2. 
B) 106 and 10-1. 
C) 10-3 and 10-2. 
D) 10-6 and 102. 
E) 102 and 10-3. 
A) 103 and 10-2. 
B) 106 and 10-1. 
C) 10-3 and 10-2. 
D) 10-6 and 102. 
E) 102 and 10-3.

Question 9

Classify the following as either a physical or a chemical property: Newspaper burns.

Accepted Answer

The answer of Classify the following as either a physical...

Question 10

Classify the following as an element, a compound, or a mixture: Air.

Accepted Answer

The answer of Classify the following as an element, a...

Question 11

The SI base unit of length is the centimeter.

Accepted Answer

A) True 
 B)False

Question 12

What is the density of a salt solution if 50.0 mL of the solution has a mass of 57.0 g?

Accepted Answer

The answer of What is the density of a salt...

Question 13

Which one of the following is an example of a physical property?

Accepted Answer

A) dynamite explodes 
B) meat rots if it is not refrigerated 
C) gasoline burns 
D) ice floats on top of liquid water 
E) a silver platter tarnishes 
A) dynamite explodes 
B) meat rots if it is not refrigerated 
C) gasoline burns 
D) ice floats on top of liquid water 
E) a silver platter tarnishes

Question 14

A pure yellow crystalline substance, when heated in a vacuum, releases a greenish gas and a red powder.Is the original yellow crystalline substance a compound or element?

Accepted Answer

The answer of A pure yellow crystalline substance, when heated...

Question 15

The number 9.64870 * 105 contains how many significant figures?

Accepted Answer

Question 16

How many cubic centimeters of an ore containing only 0.22% gold (by mass)must be processed to obtain $100 worth of gold? The density of the ore is 8.0 g/cm3 and the price of gold is $818 per troy ounce.(14.6 troy oz = 1.0 ordinary pound, called an avoirdupois pound; 1 lb = 454 g)

Accepted Answer

A) 0.48 cm3 
B) 220 cm3 
C) 1.4 * 103 cm3 
D) 1.7 * 103 cm3 
E) 1.8 * 104 cm3 
A) 0.48 cm3 
B) 220 cm3 
C) 1.4 * 103 cm3 
D) 1.7 * 103 cm3 
E) 1.8 * 104 cm3

Question 17

Iron has a density of 7.86 g/cm3. The volume occupied by 55.85 g of iron is

Accepted Answer

A) 0.141 cm3 
B) 7.11 cm3 
C) 2.8 cm3 
D) 439 cm3 
E) None of the above. 
A) 0.141 cm3 
B) 7.11 cm3 
C) 2.8 cm3 
D) 439 cm3 
E) None of the above.

Question 18

The density of mercury is 13.6 g/cm3. What volume (in quarts)is occupied by 100.g of Hg? (1 L = 1.06 qt)

Accepted Answer

A) 144 qt 
B) 7.35 qt 
C) 7.79 qt 
D) 7.79 * 10-3 qt 
E) 1.44 * 10-4 qt 
A) 144 qt 
B) 7.35 qt 
C) 7.79 qt 
D) 7.79 * 10-3 qt 
E) 1.44 * 10-4 qt

Question 19

If the price of gasoline is $2.99 per U.S.gallon, what is the cost per liter? (1 L = 1.06 qt)

Accepted Answer

A) $0.30/L 
B) $0.79/L 
C) $1.27/L 
D) $2.99/L 
E) $12.66/L 
A) $0.30/L 
B) $0.79/L 
C) $1.27/L 
D) $2.99/L 
E) $12.66/L

Question 20

What is the area, in square centimeters, of an 8.5 inch by 11 inch sheet of paper?

Accepted Answer

A) 94 cm2 
B) 240 cm2 
C) 420 cm2 
D) 6.0 * 102 cm2 
E) 1.2 * 104 cm2 
A) 94 cm2 
B) 240 cm2 
C) 420 cm2 
D) 6.0 * 102 cm2 
E) 1.2 * 104 cm2

Exam 1: Chemistry: The Study of Change

Define compound.

An organic liquid has a density of 0.8 g/cm3.What is the mass of a 42.0 mL sample of this liquid?

The density of lead is 11.4 g/cm3. Express this density in pounds per cubic foot.

What will be the cost of gasoline for a 4,700-mile automobile trip if the car gets 41 miles per gallon, and the average price of gas is $2.79 per gallon?

You just measured a sugar cube and obtained the following information: mass = 3.48 g height = length = width = 1.3 cm Determine the volume and density of the cube.Suppose the sugar cube was added to a cup of water.Before it dissolves, will the sugar cube float or sink to the bottom?

Classify the following as an element, a compound, or a mixture: Chicken broth.

A block of iron has a mass of 483 g. What is the mass of a block of graphite that has the same volume as the block of iron? The following densities at 25 ∘\circ∘ C are provided: magnesium, 1.7 g/cm3 ; graphite, 1.8 g/cm3 ; iron, 7.9 g/cm3.

The SI prefixes kilo and centi represent, respectively:

Classify the following as either a physical or a chemical property: Newspaper burns.

Classify the following as an element, a compound, or a mixture: Air.

The SI base unit of length is the centimeter.

What is the density of a salt solution if 50.0 mL of the solution has a mass of 57.0 g?

Which one of the following is an example of a physical property?

A pure yellow crystalline substance, when heated in a vacuum, releases a greenish gas and a red powder.Is the original yellow crystalline substance a compound or element?

The number 9.64870 * 105 contains how many significant figures?

How many cubic centimeters of an ore containing only 0.22% gold (by mass)must be processed to obtain $100 worth of gold? The density of the ore is 8.0 g/cm3 and the price of gold is $818 per troy ounce.(14.6 troy oz = 1.0 ordinary pound, called an avoirdupois pound; 1 lb = 454 g)

Iron has a density of 7.86 g/cm3. The volume occupied by 55.85 g of iron is

The density of mercury is 13.6 g/cm3. What volume (in quarts)is occupied by 100.g of Hg? (1 L = 1.06 qt)

If the price of gasoline is $2.99 per U.S.gallon, what is the cost per liter? (1 L = 1.06 qt)

What is the area, in square centimeters, of an 8.5 inch by 11 inch sheet of paper?

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solution

Gases

Thermo-Chemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Chemistry in the Atmosphere

Entropy, Free Energy, and Equilibrium

Electrochemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Nuclear Chemistry

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

An organic liquid has a density of 0.8 g/cm³.What is the mass of a 42.0 mL sample of this liquid?

The density of lead is 11.4 g/cm³. Express this density in pounds per cubic foot.

A block of iron has a mass of 483 g. What is the mass of a block of graphite that has the same volume as the block of iron? The following densities at 25^$\circ$C are provided: magnesium, 1.7 g/cm³; graphite, 1.8 g/cm³; iron, 7.9 g/cm³.

The number 9.64870 * 10⁵ contains how many significant figures?

How many cubic centimeters of an ore containing only 0.22% gold (by mass)must be processed to obtain $100 worth of gold? The density of the ore is 8.0 g/cm³ and the price of gold is $818 per troy ounce.(14.6 troy oz = 1.0 ordinary pound, called an avoirdupois pound; 1 lb = 454 g)

Iron has a density of 7.86 g/cm³. The volume occupied by 55.85 g of iron is

The density of mercury is 13.6 g/cm³. What volume (in quarts)is occupied by 100.g of Hg? (1 L = 1.06 qt)