Question 1

What is the correct formula for a compound that has three oxygen atoms and one sulfur atom?

Accepted Answer

A) O3S 
B) SO3 
C) 3OS 
D) SO3 
E) none of the above 
A) O3S 
B) SO3 
C) 3OS 
D) SO3 
E) none of the above

Question 2

The proper name for the acid HF is hydrofluoric acid.

Accepted Answer

A) True 
 B)False

Question 3

Carbon is considered which of the following?

Accepted Answer

A) atomic element 
B) molecular element 
C) molecular compound 
D) ionic compound 
E) none of the above 
A) atomic element 
B) molecular element 
C) molecular compound 
D) ionic compound 
E) none of the above

Question 4

What is the name of HIO3?

Accepted Answer

A) iodic acid 
B) hydroioidic acid 
C) hydroiodous acid 
D) iodous acid 
E) none of the above 
A) iodic acid 
B) hydroioidic acid 
C) hydroiodous acid 
D) iodous acid 
E) none of the above

Question 5

The subscripts in a chemical formula represent the relative mass of each atom in a chemical compound.

Accepted Answer

A) True 
 B)False

Question 6

What is the proper name for HBr (aq)?

Accepted Answer

A) hydrobromous acid 
B) hydrousbromic acid 
C) hydrobromic acid 
D) bromous acid 
E) none of the above 
A) hydrobromous acid 
B) hydrousbromic acid 
C) hydrobromic acid 
D) bromous acid 
E) none of the above

Question 7

How many of each type of atoms are there in the formula NH4C2H3O2?

Accepted Answer

A) N = 4,H = 7,C = 2,O = 2 
B) N = 1,H = 4,C = 2,O = 2 
C) N = 1,H = 3,C = 2,O = 2 
D) N = 1,H = 7,C = 2,O = 2 
E) none of the above 
A) N = 4,H = 7,C = 2,O = 2 
B) N = 1,H = 4,C = 2,O = 2 
C) N = 1,H = 3,C = 2,O = 2 
D) N = 1,H = 7,C = 2,O = 2 
E) none of the above

Question 8

The phosphorous-to-hydrogen mass ratio is 10.2 for a compound.This ratio could correspond to the compound:

Accepted Answer

A) PH. 
B) PH2. 
C) PH3. 
D) PH6. 
E) none of the above 
A) PH. 
B) PH2. 
C) PH3. 
D) PH6. 
E) none of the above

Question 9

The formula for potassium chlorate is KClO3.The formula for magnesium chloride is MgCl2.What is the formula for magnesium chlorate?

Accepted Answer

A) MgClO3 
B) Mg2ClO3 
C) Mg(ClO3)2 
D) Mg2(ClO3)3 
E) none of the above 
A) MgClO3 
B) Mg2ClO3 
C) Mg(ClO3)2 
D) Mg2(ClO3)3 
E) none of the above

Question 10

If an oxyacid contains the sulfate oxyanion,then this acid has the name sulfurous acid.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following compounds have the smallest formula mass?

Accepted Answer

A) CO2 
B) SO2 
C) NO2 
D) SiO2 
E) H2O 
A) CO2 
B) SO2 
C) NO2 
D) SiO2 
E) H2O

Question 12

What is correct name of the compound whose formula is BF3?

Accepted Answer

A) boron trifluoride 
B) boron fluoride 
C) monoboron trifluorine 
D) boron(III)fluoride 
E) none of the above 
A) boron trifluoride 
B) boron fluoride 
C) monoboron trifluorine 
D) boron(III)fluoride 
E) none of the above

Question 13

The ionic compound MgO is named manganese oxide.

Accepted Answer

A) True 
 B)False

Question 14

Suppose an unknown compound XY has an X-to-Y mass ratio of 4.0.If decomposition of compound XY gives 12.0 grams of X,then how many grams of Y must form?

Accepted Answer

A) 48.0 grams 
B) 12.0 grams 
C) 4.0 grams 
D) 3.0 grams 
E) none of the above 
A) 48.0 grams 
B) 12.0 grams 
C) 4.0 grams 
D) 3.0 grams 
E) none of the above

Question 15

What is the name of the ionic compound made of beryllium and chlorine?

Accepted Answer

A) beryllium(II)chloride 
B) beryllium dichloride 
C) beryllium chloride 
D) monoberyllium dichloride 
E) none of the above 
A) beryllium(II)chloride 
B) beryllium dichloride 
C) beryllium chloride 
D) monoberyllium dichloride 
E) none of the above

Question 16

Fluorine is considered which of the following?

Accepted Answer

A) atomic element 
B) molecular element 
C) molecular compound 
D) ionic compound 
E) none of the above 
A) atomic element 
B) molecular element 
C) molecular compound 
D) ionic compound 
E) none of the above

Question 17

What is the formula mass of sulfurous acid?

Accepted Answer

A) 82.08 amu 
B) 98.08 amu 
C) 83.09 amu 
D) 66.08 amu 
E) none of the above 
A) 82.08 amu 
B) 98.08 amu 
C) 83.09 amu 
D) 66.08 amu 
E) none of the above

Question 18

How many carbon atoms are in the formula Al2(CO3)3?

Accepted Answer

A) 3 
B) 9 
C) 1 
D) 6 
E) none of the above 
A) 3 
B) 9 
C) 1 
D) 6 
E) none of the above

Question 19

What is the formula for an ionic compound made of magnesium and sulfur?

Accepted Answer

A) MgS 
B) MgS2 
C) Mg2S 
D) Mg2S3 
E) none of the above 
A) MgS 
B) MgS2 
C) Mg2S 
D) Mg2S3 
E) none of the above

Question 20

Carbon dioxide is an example of a molecular compound.

Accepted Answer

A) True 
 B)False

What is the correct formula for a compound that has three oxygen atoms and one sulfur atom?

The proper name for the acid HF is hydrofluoric acid.

Carbon is considered which of the following?

What is the name of HIO₃^?

The subscripts in a chemical formula represent the relative mass of each atom in a chemical compound.

What is the proper name for HBr (aq)?

How many of each type of atoms are there in the formula NH₄C₂H₃O₂?

The phosphorous-to-hydrogen mass ratio is 10.2 for a compound.This ratio could correspond to the compound:

The formula for potassium chlorate is KClO₃.The formula for magnesium chloride is MgCl₂.What is the formula for magnesium chlorate?

If an oxyacid contains the sulfate oxyanion,then this acid has the name sulfurous acid.

Which of the following compounds have the smallest formula mass?

What is correct name of the compound whose formula is BF₃?

The ionic compound MgO is named manganese oxide.

Suppose an unknown compound XY has an X-to-Y mass ratio of 4.0.If decomposition of compound XY gives 12.0 grams of X,then how many grams of Y must form?

What is the name of the ionic compound made of beryllium and chlorine?

Fluorine is considered which of the following?

What is the formula mass of sulfurous acid?

How many carbon atoms are in the formula Al₂(CO₃)₃?

What is the formula for an ionic compound made of magnesium and sulfur?

Carbon dioxide is an example of a molecular compound.

The Chemical World

Measurement and Problem Solving

Matter and Energy

Atoms and Elements

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

Electrons in Atoms and the Periodic Table

Chemical Bonding

Gases

Liquids, solids, and Intermolecular Forces

Solutions

Acids and Bases

Chemical Equilibrium

Oxidation and Reduction

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

Exam 5: Molecules and Compounds

What is the correct formula for a compound that has three oxygen atoms and one sulfur atom?

The proper name for the acid HF is hydrofluoric acid.

Carbon is considered which of the following?

What is the name of HIO3?

The subscripts in a chemical formula represent the relative mass of each atom in a chemical compound.

What is the proper name for HBr (aq)?

How many of each type of atoms are there in the formula NH4C2H3O2?

The phosphorous-to-hydrogen mass ratio is 10.2 for a compound.This ratio could correspond to the compound:

The formula for potassium chlorate is KClO3.The formula for magnesium chloride is MgCl2.What is the formula for magnesium chlorate?

If an oxyacid contains the sulfate oxyanion,then this acid has the name sulfurous acid.

Which of the following compounds have the smallest formula mass?

What is correct name of the compound whose formula is BF3?

The ionic compound MgO is named manganese oxide.

Suppose an unknown compound XY has an X-to-Y mass ratio of 4.0.If decomposition of compound XY gives 12.0 grams of X,then how many grams of Y must form?

What is the name of the ionic compound made of beryllium and chlorine?

Fluorine is considered which of the following?

What is the formula mass of sulfurous acid?

How many carbon atoms are in the formula Al2(CO3)3?

What is the formula for an ionic compound made of magnesium and sulfur?

Carbon dioxide is an example of a molecular compound.

The Chemical World

Measurement and Problem Solving

Matter and Energy

Atoms and Elements

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

Electrons in Atoms and the Periodic Table

Chemical Bonding

Gases

Liquids, solids, and Intermolecular Forces

Solutions

Acids and Bases

Chemical Equilibrium

Oxidation and Reduction

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

What is the name of HIO₃^?

How many of each type of atoms are there in the formula NH₄C₂H₃O₂?

The formula for potassium chlorate is KClO₃.The formula for magnesium chloride is MgCl₂.What is the formula for magnesium chlorate?

What is correct name of the compound whose formula is BF₃?

How many carbon atoms are in the formula Al₂(CO₃)₃?