Question 1

Determine the name for P4O10.

Accepted Answer

A)   phosphorus (IV)  oxide
B)   diphosphorus pentoxide
C)   phosphorus oxide
D)   phosphorus (II)  oxide
E)   tetraphosphorus decoxideF) A) and D)
G) B) and D)

Question 2

Identify the compound with ionic bonds.

Accepted Answer

A)   Ne
B)   CO
C)   H2
D)   H2O
E)   KClF) B) and D)
G) A) and B)

Question 3

Which of the following represent the Lewis structure for Cl?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) All of the above
G) A) and B)

Question 4

Determine the name for CoCl2∙6H2O.Remember that Co forms several ions.

Accepted Answer

A)   cobalt chloride hydrate
B)   cobalt (I)  chloride heptahydrate
C)   cobalt (II)  chloride heptahydrate
D)   cobalt (II)  chloride hexahydrate
E)   cobalt (I)  chlorideF) A) and C)
G) A) and E)

Question 5

How many SO32- ions are contained in 99.6 mg of Na2SO3? The molar mass of Na2SO3 is 126.05 g/mol.

Accepted Answer

A)   1.52 × 1027 SO32- ions
B)   4.76 × 1020 SO32- ions
C)   2.10 × 1021 SO32- ions
D)   1.05 × 1021 SO32- ions
E)   9.52 × 1020 SO32- ionsF) All of the above
G) A) and B)

Question 6

The energy associated with formation of a crystalline structure from gaseous ions is know as the

Accepted Answer

A)   ionization energy.
B)   lattice energy.
C)   precipitation energy.
D)   electron affinity.
E)   potential energy.F) A) and B)
G) C) and E)

Question 7

What is the chemical name for P2I4?

Accepted Answer

A)   phosphorous (IV)  iodine
B)   diphosphorous tetraiodine
C)   phosphorous tetraiodine
D)   phosphorous (II)  iodine
E)   diphosphorous iodineF) A) and B)
G) A) and C)

Question 8

What is the empirical formula of a compound that is 48.6% C,8.2% H,and 43.2% O by mass?

Accepted Answer

A)    
B)    
C)     
D)     
E)     F) A) and B)
G) C) and D)

Question 9

How many moles of P I3 contain 2.55 × 1024 iodine atoms?

Accepted Answer

A)   1.41 moles P I3
B)   4.23 moles P I3
C)   12.7 moles P I3
D)   7.87 moles P I3
E)   2.82 moles P I3F) C) and E)
G) All of the above

Question 10

Use Lewis theory to determine the chemical formula for the compound formed between Ca and I.

Accepted Answer

A)   Ca I
B)   Ca2I3
C)   Ca3I2
D)   Ca I2
E)   Ca2IF) B) and D)
G) B) and E)

Question 11

A triple covalent bond contains ________ of electrons.

Accepted Answer

A)   0 pairs
B)   1 pair
C)   2 pairs
D)   3 pairs
E)   4 pairsF) None of the above
G) A) and E)

Question 12

Use Lewis theory to determine the chemical formula for the compound formed between Mg and N.

Accepted Answer

A)   MgN
B)   Mg3N2
C)   MgN2
D)   Mg2N
E)   Mg2N3F) None of the above
G) A) and D)

Question 13

Calculate the molar mass of Ba(C2O4) 2.

Accepted Answer

A)   128.53 g/mol
B)   328.01 g/mol
C)   294.77 g/mol
D)   225.34 g/mol
E)   301.90 g/molF) B) and D)
G) B) and E)

Question 14

Calculate the mass percent composition of lithium in Li3PO4.

Accepted Answer

A)   26.75 %
B)   17.98 %
C)   30.72 %
D)   55.27 %
E)   20.82 %F) A) and E)
G) B) and E)

Question 15

Which of the compounds,K H ,N H3,C2H6,H F are ionic compounds?

Accepted Answer

A)   only C2H6
B)   only K H 
C)   K H  and H F 
D)   N H3, C2H6, and H F E) A) and C)
F) B) and C)

Question 16

What is the chemical name for S2O?

Accepted Answer

A)   sulfur dioxide
B)   sulfur oxide
C)   disulfur oxide
D)   disulfur monoxide
E)   sulfur monoxideF) None of the above
G) All of the above

Question 17

Give the name for H2SO4.

Accepted Answer

A)   sulfuric acid
B)   persulfurous acid
C)   sulfurous acid
D)   hyposulfurous acid
E)   persulfuric acidF) A) and B)
G) A) and C)

Question 18

Identify a carboxylic acid.

Accepted Answer

A)   CH3CH2OCH2CH3
B)   CH3CH2Cl
C)   CH3CH2NH2
D)   CH3CH2CH2CH3
E)   CH3COOHF) C) and E)
G) B) and D)

Question 19

How many moles of N2O4 are in 76.3 g N2O4? The molar mass of N2O4 is 92.02 g/mol.

Accepted Answer

A)   7.02 × 103 moles
B)   1.42 × 10-4 moles
C)   1.00 mole
D)   1.21 moles
E)   0.829 molesF) B) and D)
G) None of the above

Question 20

What is the chemical formula for barium oxide?

Accepted Answer

A)   BaO
B)   BaO2
C)   Ba2O2
D)   Ba2O
E)   Ba2O3F) A) and E)
G) A) and C)

Exam 5: Molecules and Compounds

The energy associated with formation of a crystalline structure from gaseous ions is know as the

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Which of the compounds,K H ,N H3,C2H6,H F are ionic compounds?

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Use Lewis theory to determine the chemical formula for the compound formed between Mg and N.

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How many SO32- ions are contained in 99.6 mg of Na2SO3? The molar mass of Na2SO3 is 126.05 g/mol.

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A triple covalent bond contains ________ of electrons.

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Determine the name for CoCl2∙6H2O.Remember that Co forms several ions.

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What is the chemical formula for barium oxide?

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Determine the name for P4O10.

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How many moles of N2O4 are in 76.3 g N2O4? The molar mass of N2O4 is 92.02 g/mol.

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What is the empirical formula of a compound that is 48.6% C,8.2% H,and 43.2% O by mass?

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Use Lewis theory to determine the chemical formula for the compound formed between Ca and I.

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Identify the compound with ionic bonds.

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How many moles of P I3 contain 2.55 × 1024 iodine atoms?

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Which of the following represent the Lewis structure for Cl?

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What is the chemical name for P2I4?

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Calculate the molar mass of Ba(C2O4) 2.

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Calculate the mass percent composition of lithium in Li3PO4.

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Give the name for H2SO4.

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What is the chemical name for S2O?

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Identify a carboxylic acid.

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Which of the compounds,KH,N H₃,C₂H₆,H Fare ionic compounds?

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How many SO₃^2- ions are contained in 99.6 mg of Na₂SO₃? The molar mass of Na₂SO₃is 126.05 g/mol.

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Determine the name for CoCl₂^∙6H₂O.Remember that Co forms several ions.

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Determine the name for P₄O₁₀.

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How many moles of N₂O₄ are in 76.3 g N₂O₄? The molar mass of N₂O₄ is 92.02 g/mol.

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How many moles of P I₃ contain 2.55 × 10²⁴ iodine atoms?

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What is the chemical name for P₂I₄?

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Calculate the molar mass of Ba(C₂O₄) ₂.

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Calculate the mass percent composition of lithium in Li₃PO₄.

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Give the name for H₂SO₄.

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What is the chemical name for S₂O?

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