Question 1

Different compounds with the same molecular formula are called __________.

Accepted Answer

The answer of Different compounds with the same molecular formula...

Question 2

What is the approximate C-C-C bond angle in propene, CH3CH=CH2?

Accepted Answer

A)  90 ∘\circ∘ 
B)  109 ∘\circ∘ 
C)  120 ∘\circ∘ 
D)  180 ∘\circ∘  E) A) and D)
F) C) and D)

Question 3

What is the approximate value of the length of the C ≡\equiv≡ C bond in ethyne, HC ≡\equiv≡ CH?

Accepted Answer

A)  121 pm
B)  134 pm
C)  142 pm
D)  154 pm E) B) and D)
F) B) and C)

Question 4

How many electrons are there in the valence shell of the oxygen atom of water?

Accepted Answer

A)  2
B)  4
C)  6
D)  8E) B) and C)
F) B) and D)

Question 5

Circle and name the functional groups in the following molecule.

Accepted Answer

The answer of Circle and name the functional groups in...

Question 6

The formal charges in the complex should below are 0 on each H, -1 on N, and +1 on B.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following is a tertiary alcohol?

Accepted Answer

A)  CH3CH2OCH3
B)  (CH3) 3COH
C)  (CH3) 2CHOHWhat is the correct assignment of the naD) None of the above
E) All of the above

Question 8

Which atomic orbitals overlap to form the carbon-hydrogen  σ\sigmaσ bonding molecular orbitals of ethene, H2C=CH2?

Accepted Answer

A)  C2p + H1s
B)  C2sp + H1s
C)  C2sp2 + H1s
D)  C2sp3 + H1s E) A) and C)
F) A) and B)

Question 9

Which of the following molecules has a molecular dipole moment?

Accepted Answer

A)  CO2
B)  BF3
C)  NH3
D)  CH4E) None of the above
F) A) and B)

Question 10

What is the approximate H-C-O bond angle in formaldehyde, H2C=O?

Accepted Answer

A)  90 ∘\circ∘ 
B)  109 ∘\circ∘ 
C)  120 ∘\circ∘ 
D)  180 ∘\circ∘  E) B) and C)
F) None of the above

Question 11

The approximate H-C-H bond angle in methane is ______°.

Accepted Answer

The answer of The approximate H-C-H bond angle in methane...

Question 12

Which of the following is an ionic bond?

Accepted Answer

A)  F-F
B)  C-H
C)  Li-O
D)  C-NE) A) and B)
F) B) and D)

Question 13

There are eight valence in a methyl anion, CH3-.

Accepted Answer

A) True 
 B)False

Question 14

Which atomic orbitals overlap to form the carbon-carbon  σ\sigmaσ and  π\piπ bonding molecular orbitals of ethene, H2C=CH2?

Accepted Answer

A)  C2sp3 + C2sp3, and C2p + C2p
B)  C2sp2 + C2sp2, and C2sp2 + C2sp2
C)  C2sp2 + C2sp2, and C2p + C2p
D)  C2sp3 + C2sp3, and C2sp2 + C2sp2 E) A) and B)
F) None of the above

Question 15

Draw bond-line structures of all of the ketones that have the formula C5H10O.

Accepted Answer

Question 16

Circle all of the sp2 hybridized atoms in the following molecular structure.

Accepted Answer

Question 17

Which of the following is trigonal planar?

Accepted Answer

A)  boron trifluoride, BF3
B)  methyl anion, CH3-
C)  methane, CH4
D)  ammonia, NH3E) B) and D)
F) All of the above

Question 18

Which of the following compounds is a carboxylic ester?

Accepted Answer

A)  CH3CH2COOH
B)  CH3CH2OCH3
C)  CH3CH2COOCH3
D)  CH3CH2COCH3E) B) and D)
F) A) and D)

Question 19

The percent s character in an sp2 hybridized orbital is approximately 33%.

Accepted Answer

A) True 
 B)False

Question 20

Consider the following structural formula.  The following is a resonance structure.

Accepted Answer

A) True 
 B)False

Exam 1: Covalent Bonding and Shapes of Molecules

Which of the following molecules has a molecular dipole moment?

Correct AnswerverifiedShow Answer

What is the approximate C-C-C bond angle in propene, CH3CH=CH2?

Correct AnswerverifiedShow Answer

Which atomic orbitals overlap to form the carbon-hydrogen σ\sigmaσ bonding molecular orbitals of ethene, H2C=CH2?

Correct AnswerverifiedShow Answer

Which atomic orbitals overlap to form the carbon-carbon σ\sigmaσ and π\piπ bonding molecular orbitals of ethene, H2C=CH2?

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The approximate H-C-H bond angle in methane is ______°.

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How many electrons are there in the valence shell of the oxygen atom of water?

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Which of the following compounds is a carboxylic ester?

Correct AnswerverifiedShow Answer

Draw bond-line structures of all of the ketones that have the formula C5H10O.

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Which of the following is an ionic bond?

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What is the approximate value of the length of the C ≡\equiv≡ C bond in ethyne, HC ≡\equiv≡ CH?

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Consider the following structural formula. The following is a resonance structure.

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Different compounds with the same molecular formula are called __________.

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Which of the following is a tertiary alcohol?

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The formal charges in the complex should below are 0 on each H, -1 on N, and +1 on B.

Correct AnswerverifiedShow Answer

What is the approximate H-C-O bond angle in formaldehyde, H2C=O?

Correct AnswerverifiedShow Answer

Which of the following is trigonal planar?

Correct AnswerverifiedShow Answer

Circle and name the functional groups in the following molecule.

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The percent s character in an sp2 hybridized orbital is approximately 33%.

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Circle all of the sp2 hybridized atoms in the following molecular structure.

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There are eight valence in a methyl anion, CH3-.

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What is the approximate C-C-C bond angle in propene, CH₃CH=CH₂?

Correct Answer
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Which atomic orbitals overlap to form the carbon-hydrogen $\sigma$ bonding molecular orbitals of ethene, H₂C=CH₂?

Correct Answer
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Which atomic orbitals overlap to form the carbon-carbon $\sigma$ and $\pi$ bonding molecular orbitals of ethene, H₂C=CH₂?

Correct Answer
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Draw bond-line structures of all of the ketones that have the formula C₅H₁₀O.

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What is the approximate value of the length of the C $\equiv$ C bond in ethyne, HC $\equiv$ CH?

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What is the approximate H-C-O bond angle in formaldehyde, H₂C=O?

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The percent s character in an sp² hybridized orbital is approximately 33%.

Correct Answer
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Circle all of the sp² hybridized atoms in the following molecular structure.

Correct Answer
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There are eight valence in a methyl anion, CH₃^-.

Correct Answer
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