CHEM 102 WINTER 16 PRACTICE FINAL EXAM (C) KEY,100% CORRECT
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Course
CHEM 102
Institution
CHEM 102
CHEM 102 WINTER 16 PRACTICE FINAL EXAM (C) KEY
1. What is true about cytosine? Choose ALL true statements.
A. All of the nitrogen atoms are sp3 hybridized.
B. The bond angle around all carbon atoms are around 120°.
C. Cytosine can potentially make up to 8 hydrogen bonds.
D. All of the ca...
CHEM 102 WINTER 16 PRACTICE FINAL EXAM (C) KEY
1. What is true about cytosine? Choose ALL true statements.
A. All of the nitrogen atoms are sp3 hybridized.
B. The bond angle around all carbon atoms are around 120°.
C. Cytosine can potentially make up to 8 hydrogen bonds.
D. All of the carbon atoms are sp2 hybridized.
E. There are a total of 3 pi bonds in this molecule.
2. Rank the following diatomic molecules/ions in terms of decreasing stability. Please
choose a SINGLE answer.
He2 O2+ CN- B2 2- NF
A. CN- > O2+ >2B 2- = NF >2 He
B. He2 > NF > B22- >2 O + > CN-
C. CN-- > O2++ > NF2- > B22- > He2
D. CN > O2 >2B > NF >2 He
E. He2 > B2
2-
> NF > CN-2 > O 2-
3. Which of the following ions will likely have the shortest Cl–O bond length? Please
choose a SINGLE answer.
A. ClO-
B. ClO2-
C. ClO3-
D. ClO4-
E. Cannot be determined
Page | 1
, 4. A metal nitride has a nitrogen atom at each corner and a metal atom at each edge to
make up a unit cell. Which is the empirical formula for this metal nitride? Please
choose a SINGLE answer.
A. Ba3N2
B. Na3N
C. AlN
D. Ti3N4
E. NaN3
5. Rank the following molecules in terms of increasing volatility. Please choose a
SINGLE answer.
I II III IV V
C2H C3H
6 8
A. II < V < III < IV < I
B. I < IV < III < V < II
C. II < IV < V < III < I
D. II < V < III < I < IV
E. III < I < V < IV < II
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