Module 3 Problem Set_ Principles of Organic Chemistry with Lab-2021-Gallaher
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Module 3 Problem Set: Principles of Organic Chemistry with Lab-2021-Gallaher
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Module 3 Problem Set
Due
No due date
Points
10
Questions
16
Time Limit
None
Attempt History
Attempt
Time
Score
LATEST
Attempt 1
1,786 minutes
10 out of 10
Score for this quiz:
10
out of 10
Submitted Oct 20 at 12:54am
This attempt took 1,786 minutes.
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Question 1
Your Answer:
Define the term “chirality”.
the concept of “handedness” in an object.
Answer:
“Chirality” is the concept of “handedness” in an object. That
is, certain objects, chiral objects, can exist in two forms that
are mirror images of one another, yet are not interchangeable,
like a left- and right-handed glove. In terms of organic
chemistry, a molecule is chiral when it is non-superimposable
on its own mirror image.
0 / 0 pts
Question 2
12/14/23, 8:43 PM
Module 3 Problem Set: Principles of Organic Chemistry with Lab-2021-Gallaher
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Answer 1:
Answer 2:
Answer 3:
Answer 4:
Characterize each of the following objects as being chiral or achiral.
a. Golf Club
chiral
b. Teacup
achiral
c. Football
achiral
d. Corkscrew
achiral
e. Tennis Racket
achiral
f. Shoe
chiral
g. Pencil
achiral
Chiral
Correct!
Correct!
Achiral
Correct!
Correct!
Achiral
Correct!
Correct!
achiral
ou Answered
ou Answered
12/14/23, 8:43 PM
Module 3 Problem Set: Principles of Organic Chemistry with Lab-2021-Gallaher
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Answer 5:
Answer 6:
Answer 7:
Chiral
orrect Answer
orrect Answer
Achiral
Correct!
Correct!
Chiral
Correct!
Correct!
Achiral
Correct!
Correct!
0 / 0 pts
Question 3
Match each of the following terms to its correct description.
Constitutional Isomers
Stereoisomers that are
ou Answered
ou Answered
Different compounds
with the same
molecular formula
caused by
differences in the
connectivity between
atoms.
Correct Answer
Correct Answer
Stereoisomers
Different compounds w
Correct!
Correct!
Enantiomer
Different compounds w
ou Answered
ou Answered
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12/14/23, 8:43 PM
Module 3 Problem Set: Principles of Organic Chemistry with Lab-2021-Gallaher
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Stereoisomers that
are non-
superimposable
mirror images of one
another.
Correct Answer
Correct Answer
Diastereomer
Stereoisomers that are
Correct!
Correct!
Not yet graded / 0 pts
Question 4
Your Answer:
Draw each of the following structures on a piece of paper. Identify any
stereocenters in each by indicating the carbon number corresponding to a
stereocenter. If there are no stereocenters in a compound, state “none”:
a. 2,2-dichloropropane
b. 1,2-dichlorobutane
c. 2-methylhexane
a: 1 (2)
b: none
c: 4 (2,3,4,5)
12/14/23, 8:43 PM
Module 3 Problem Set: Principles of Organic Chemistry with Lab-2021-Gallaher
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Answer:
0 / 0 pts
Question 5
For each of the following, indicate if the indicated carbon would be a
stereocenter (“yes”) or not (“no”).
1
no
2
yes
3
yes
4
no
12/14/23, 8:43 PM
Module 3 Problem Set: Principles of Organic Chemistry with Lab-2021-Gallaher
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Answer 1:
Answer 2:
Answer 3:
Answer 4:
Answer 5:
5
no
6
no
7
no
8
no
9
yes
10
no
11
yes
no
Correct!
Correct!
yes
Correct!
Correct!
yes
ou Answered
ou Answered
no
orrect Answer
orrect Answer
no
Correct!
Correct!
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Module 3 Problem Set: Principles of Organic Chemistry with Lab-2021-Gallaher
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Answer 6:
Answer 7:
Answer 8:
Answer 9:
Answer 10:
Answer 11:
no
ou Answered
ou Answered
yes
orrect Answer
orrect Answer
no
ou Answered
ou Answered
yes
orrect Answer
orrect Answer
no
Correct!
Correct!
no
Correct!
Correct!
yes
ou Answered
ou Answered
no
orrect Answer
orrect Answer
no
Correct!
Correct!
yes
ou Answered
ou Answered
no
orrect Answer
orrect Answer
Not yet graded / 0 pts
Question 6
For the following molecules:
12/14/23, 8:43 PM
Module 3 Problem Set: Principles of Organic Chemistry with Lab-2021-Gallaher
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Your Answer:
i. Determine the maximum number of stereoisomers that could exist for
each.
ii. Explain how you arrived at the answer for each in part “a” above.
a. none
b. yes at 2, yes ,yes at 2
c. yes at one, yes at 4
Answer:
i. a. = 2, b. = 4, c. = 1
ii. Apply the formula 2
, where “n” is the number of
stereocenters present in the molecule.
n
Not yet graded / 0 pts
Question 7
The following molecule is chiral. Answer the questions that follow.
a. What is the IUPAC name of this molecule?
b. What carbon number is a stereocenter?
12/14/23, 8:43 PM
Module 3 Problem Set: Principles of Organic Chemistry with Lab-2021-Gallaher
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Your Answer:
c. What are the four different groups attached to the stereocenter?
d. What is the maximum number of stereoisomers that could exist for
this molecule?
a. 3-ethylheptane
b. 3
c. three carbons, and one hydrogen
d. 5
Answer:
a. 3-methylheptane
b. 3
c. Hydrogen, methyl, ethyl, and butyl
d. 2 (one stereocenter)
0 / 0 pts
Question 8
Assign a priority order (
1-4
;
1 is greatest priority
) to the following four
groups for the purposes of determining R and S configurations at a
stereocenter.
i)
Group “A”
Group “B”
Group “C”
Group
-CH
-CH(CH )
-H
-NH
Priority
3
2
4
1
3
3 2
2
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Module 3 Problem Set: Principles of Organic Chemistry with Lab-2021-Gallaher
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Answer 1:
Answer 2:
Answer 3:
Answer 4:
Answer 5:
Answer 6:
Answer 7:
Answer 8:
ii)
-OH
-F
CH
-CH O
Priority
3
1
4
2
3
2
3
Correct!
Correct!
2
Correct!
Correct!
4
Correct!
Correct!
1
Correct!
Correct!
3
ou Answered
ou Answered
2
orrect Answer
orrect Answer
1
Correct!
Correct!
4
Correct!
Correct!
2
ou Answered
ou Answered
3
orrect Answer
orrect Answer
12/14/23, 8:43 PM
Module 3 Problem Set: Principles of Organic Chemistry with Lab-2021-Gallaher
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Not yet graded / 0 pts
Question 9
Your Answer:
Based on the direction of twist of the following groups, assign an R or S
orientation.
a: s
b: r
c: s
Answer:
Not yet graded / 0 pts
Question 10
12/14/23, 8:43 PM
Module 3 Problem Set: Principles of Organic Chemistry with Lab-2021-Gallaher
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Your Answer:
Assign an R/S configuration for the following molecule:
r
Answer:
The molecule is in the “R” configuration. It is (1R)-1-bromo-1-
chloroethane.
Not yet graded / 0 pts
Question 11
The Fischer projection formula of the molecule glucose (blood sugar) is
shown below.
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Your Answer:
a. How many stereocenters are present in the glucose molecule?
b. What is the maximum number of stereoisomers that could exist for
this sugar?
a. 4
b. 16
Answer:
a. Four stereocenters.
b. 2
(n =4) = 2
=
16 stereoisomers.
n
4
Not yet graded / 0 pts
Question 12
Your Answer:
The possible stereoisomers of tartaric acid are shown below as Fischer
projections. Answer the following questions:
a. Which stereoisomers (if any) represent pairs of
enantiomers
? (list all
the pairings that apply)
b. Which stereoisomers (if any) represent pairs of
diastereomers
? (list
all the pairings that apply)
c. Which stereoisomers (if any) represent a
meso compound
?
12/14/23, 8:43 PM
Module 3 Problem Set: Principles of Organic Chemistry with Lab-2021-Gallaher
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a: A, D
b: A, D
c: B, C
Answer:
a. A pair of enantiomers is represented by structures A and
D. They are non-superimposable mirror images of one
another.
b. Pairs of diastereomers are represented by A/B, A/C, B/D,
C/D. These are stereoisomers that are NOT mirror images of
one another.
c. A meso compound is represented by structure B (or C).
There is an internal mirror plane of symmetry that results in B
being superimposable on (identical to) its own mirror image
(C).
Not yet graded / 0 pts
Question 13
Your Answer:
For each of the following molecules, determine if the C=C is in the “E” or
“Z” configuration.
A: Z
B: E
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Answer:
A. = “Z” configuration
B. = “E” configuration
Not yet graded / 0 pts
Question 14
Your Answer:
Define the term
meso compound
.
A
meso compound
is a molecule that contains stereocenters but is
superimposable on its own mirror image.
Answer:
A
meso compound
is a molecule that contains stereocenters but
is superimposable on its own mirror image.
Not yet graded / 0 pts
Question 15
Compare the following molecule (shown in the box) to the four possible
stereoisomers of tartaric acid. What is the relationship of the boxed
molecule to any of the stereoisomers of tartaric acid? Provide a brief
explanation for your answer.
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Your Answer:
Enantiomers, same molecule, not superimposable
Answer:
The molecule shown in the box is a
constitutional isomer
of any
of the stereoisomers of tartaric acid. The atoms are connected
differently in the molecule shown in the box than in tartaric acid.
The boxed molecule is 2,2-dihydroxy-1,4-butanedioic acid, while
the IUPAC name of tartaric acid is 2,3-dihydroxy-1,4-butanedioic
acid.
Not yet graded / 10 pts
Question 16
Your Answer:
As a reminder, the questions in this review quiz are a requirement of the
course and the best way to prepare for the module exam. Did you
complete all questions in their entirety?
Yes
Quiz Score:
10
out of 10
This quiz score has been manually adjusted by +10.0 points.
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B
600 -
-A
400.
200-
Use this diagram to complete the table below.
What is the energy of the electron in the ground state?
What is the energy of the electron in the first excited
state?
O absorbed
If the electron makes the transition shown by the red
arrow, from C to A, will a photon be…
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1. Calculate the mass percent of water for the hydrate, LINO,-3H;O.
2. What will be the probable effect if you kept the crucible completely covered during the entire
heating and cooling processes? Would your calculated percent water in the hydrate be high, low, or
unaffected? Explain.
3. If 2.752 g sample of Ca(NO:); XH;O is heated to constant mass, the residue weighs 1.941 g.
Determine the value of x and the formula of the hydrate.
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what is the concentration of the unknown sample using serial diluitions: 0.05M 1.7472nm, 0.025M 0.8569nm, 0.0125M 0.4167nm, 0.00625M 0.1958nm the epsilon value is 0.0101 and l is 1 cm
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With the image attached please do the calculations/calculate what is highlighted in yellow please
Please also calculate
- percent % error in molar mass
- percent % error in pKa
Please please please answer as fast as possible
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