Question 1

The correct name for H2SO3 is sulfurous acid.

Accepted Answer

A) True 
 B)False

Question 2

The law of constant composition states:

Accepted Answer

A)  Matter cannot be either created or destroyed in a chemical reaction.
B)  The nucleus is a dense region of positive charge that always contains protons and neutrons.
C)  All samples of a given compound have the same proportions of their constituent elements.
D)  All atoms of a given element have a constant composition and are different than atoms of any other element.
E)  none of the above

Question 3

What is the formula for an ionic compound made of barium and nitrogen?

Accepted Answer

A)  Ba3N2
B)  Ba2N3
C)  BaN
D)  Ba2N4
E)  none of the above

Question 4

The ionic compound that forms between Mg and O is MgO.

Accepted Answer

A) True 
 B)False

Question 5

A certain oxyacid is derived from the oxyanion SO32-.The formula for the oxyacid is:

Accepted Answer

A)  H2SO4.
B)  HSO3.
C)  H2SO3.
D)  H3SO3.
E)  none of the above

Question 6

What is the correct formula for ammonium hydrogen sulfate?

Accepted Answer

A)  NH4HSO4
B)  (NH4) 2HSO4
C)  (NH4) 2SO4
D)  Am2HSO4
E)  none of the above

Question 7

What is the name of the compound whose formula is Na2O?

Accepted Answer

A)  sodium monoxide
B)  disodium oxide
C)  disodium monoxide
D)  sodium oxide
E)  none of the above

Question 8

The name of KNO3 is potassium nitratide.

Accepted Answer

A) True 
 B)False

Question 9

If the mass ratio of K to F in a compound is 2.06:1,how many grams of F are needed to react with 
Of K?

Accepted Answer

A)  0.877
B)  1.12
C)  0.112
D)  8.77
E)  none of the above

Question 10

Suppose that in an ionic compound,"M" represents a metal that could form more than one type of ion.In the formula MP ,the charge of the M ion would be:

Accepted Answer

A)  +1
B)  -1
C)  +2
D)  -3
E)  +3

Question 11

The basic unit of an ionic compound is called the formula unit.

Accepted Answer

A) True 
 B)False

Question 12

What is the formula mass for diboron tetrachloride?

Accepted Answer

A)  127.98 amu
B)  198.89 amu
C)  234.34 amu
D)  163.43 amu
E)  none of the above

Question 13

How many of each type of atom are there in the formula Ca3(PO4) 2?

Accepted Answer

A)  Ca = 3,P = 1,O = 4
B)  Ca = 3,P = 2,O = 4
C)  Ca = 3,P = 2,O = 8
D)  Ca = 3,P = 1,O = 8
E)  none of the above

Question 14

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

Question 15

The properties of a compound are an average of the properties of the individual elements.

Accepted Answer

A) True 
 B)False

Question 16

The correct name for HNO3 is hydronitric acid.

Accepted Answer

A) True 
 B)False

Question 17

Suppose that in an ionic compound,"M" represents a metal that could form more than one type of ion.In the formula MF2 ,the charge of the M ion would be:

Accepted Answer

A)  +2
B)  -1
C)  +4
D)  -2
E)  +1

Question 18

What is the name of the molecular compound SF5?

Accepted Answer

A)  sulfur hexafluoride
B)  sulfur heptafluoride
C)  monosulfur tetrafluoride
D)  sulfur pentafluoride
E)  none of the above

Question 19

The ratio in a chemical formula is a ratio of atoms,not a ratio of masses.

Accepted Answer

A) True 
 B)False

Question 20

Ionic compounds have a net charge of zero.

Accepted Answer

A) True 
 B)False

Exam 5: Molecules and Compounds

The law of constant composition states:

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The properties of a compound are an average of the properties of the individual elements.

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The correct name for HNO3 is hydronitric acid.

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A certain oxyacid is derived from the oxyanion SO32-.The formula for the oxyacid is:

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If the mass ratio of K to F in a compound is 2.06:1,how many grams of F are needed to react with Of K?

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How many of each type of atom are there in the formula Ca3(PO4) 2?

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Suppose that in an ionic compound,"M" represents a metal that could form more than one type of ion.In the formula MF2 ,the charge of the M ion would be:

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The name of KNO3 is potassium nitratide.

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Suppose that in an ionic compound,"M" represents a metal that could form more than one type of ion.In the formula MP ,the charge of the M ion would be:

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What is the name of the molecular compound SF5?

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What is the correct formula for ammonium hydrogen sulfate?

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The correct name for H2SO3 is sulfurous acid.

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Ionic compounds have a net charge of zero.

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The ionic compound that forms between Mg and O is MgO.

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The ratio in a chemical formula is a ratio of atoms,not a ratio of masses.

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What is the formula for an ionic compound made of barium and nitrogen?

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

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The basic unit of an ionic compound is called the formula unit.

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What is the formula mass for diboron tetrachloride?

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What is the name of the compound whose formula is Na2O?

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The correct name for HNO₃ is hydronitric acid.

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A certain oxyacid is derived from the oxyanion SO₃^2-.The formula for the oxyacid is:

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How many of each type of atom are there in the formula Ca₃(PO₄) ₂?

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Suppose that in an ionic compound,"M" represents a metal that could form more than one type of ion.In the formula MF₂ ,the charge of the M ion would be:

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The name of KNO₃ is potassium nitratide.

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What is the name of the molecular compound SF₅?

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The correct name for H₂SO₃ is sulfurous acid.

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

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What is the name of the compound whose formula is Na₂O?

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