Homework Answers
Carbon atoms in single bonds rotate freely. The free rotation about the carbon-carbon bond is feasible because there are no regions of electron density above and below the bond which can repel rotating groups.
The rotation around a double bond is not feasible, as the pi bond prevents rotation. The electron overlap both above and below the plane of the atoms cause hindrance for rotation.
Hence in the given molecule Bond 3 is rotatable. Because it is a C-C single bond.
Bond 2 is a double bond, hence rotation is not possible.
Rotation around a N-H single bond is not considered, as H binds through a symmetrical S orbital, hence rotation would not make any changes.
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Question 5 Which bond(s) allow(s) free rotation? Select ALL that apply. HH N 0- Bond 1...
Question 5 1 pts Which bond(s) allow(s) free rotation? Select ALL that apply. H H :0: 2 H=C=c———0 CH Bond 3 Bond 1 Bond...
Question 5 1 pts Which bond(s) allow(s) free rotation? Select ALL that apply. H H :0: 2 H=C=c———0 CH Bond 3 Bond 1 Bond 2 Question 4 1 pts What are the hybridizations of atoms 1, 2, and 3, respectively in the structure below? 10: C2 sp2 sp2 03 sp sp sp spº sp sp2 sp sp3 ОЕ OD
05 Question (1 point) Select all of the bonds about which free rotation can occur. 1st...
05 Question (1 point) Select all of the bonds about which free rotation can occur. 1st attempt See Periodic Table See Hint
Choose the eclipsed and staggered Newman conformations for 3-methylpentane down the 2-3 bond. Select ALL that apply HH...
Choose the eclipsed and staggered Newman conformations for 3-methylpentane down the 2-3 bond. Select ALL that apply HH г на нсн, H нн CHз н Нас. н Et CHз Et Et Нас. Нас H н HH Et нCH, EH нн L Нас. CH3з Н Et н Н. Et Et Et Нас. н Нас H Н CHз Нас. н Et г нае. CH3 HEt I I I т. I I L L
In the molecule below, which carbons have bond angles of 180∘? Select all that apply. A...
In the molecule below, which carbons have bond angles of 180∘?
Select all that apply.
A condensed structural formula for C H subscript 2 C H C H
subscript 2 C C H. The numbers 1 through 5 are above the carbon
atoms in sequence from left to right.
Select all that apply:
1
2
3
4
5
1 2 3 45 CH2CHCH CCH
What is/are the product(s) for the following reaction? Select all that apply. What is are the...
What is/are the product(s) for
the following reaction? Select all that apply.
What is are the products for the following reaction Select all that apply. 1.03 2. DMS | HH
Which charge(s) for the N2 molecule would give a bond order of 1.5? (Select all that...
Which charge(s) for the N2 molecule would give a bond order of 1.5? (Select all that apply.) −4 −3 −2 −1 +1 +2 +3 +4
What are the possible values of I, mI, ms for n= 5? select all that apply....
What are the possible values of I, mI, ms for n= 5? select all that apply. I: 0, 1, 2, 3, 4, 5, 6 mI: 0, -1,+1 -2,+2 -3, +3 -4, +4 -5, +5 -6, +6 ms:0 +1/2, -1/2 +1, -1 +3/2, -3/2 +2, -2
Question 5 of 24 > Which of these molecules are ketones? Check all that apply. OB...
Question 5 of 24 > Which of these molecules are ketones? Check all that apply. OB DA HH Гр OF H3C—0_CH
a For these transitions, which ones involve the ground state? (Select all that apply.) On=5 to...
a For these transitions, which ones involve the ground state? (Select all that apply.) On=5 to n=3 n=1 to n = 4 n=2 to n=4 n=5 to n=2 b For these transitions, which one involves the greatest energy change? On=5 to n=3 n=1 to n = 4 On=2 to n=4 On=5 to n=2 For these transitions, which one absorbs the most energy? On=5 to n = 3 On=1 to n=4 n=2 to n= 4 n=5 to n=2
help! Question 1 (1.25 points) Which of the following carbohydrates contain ketohexoses? (Select all that apply.)...
help!
Question 1 (1.25 points) Which of the following carbohydrates contain ketohexoses? (Select all that apply.) Sucrose Fructose Lactose Starch Cellulose Question 2 (1.25 points) Which of the following functional groups in a carbohydrate are able to be oxidized to carboxylic acids? (Select all that apply.) Alcohols Ketones that are rearranged in solution. Aldehydes Ketones that are not rearranged in solution. Question 3 (1.25 points) Which of the following carbohydrates were reducing sugars? (Select all that apply.) Sucrose Cellulose Starch...
Question 5 1 pts Which bond(s) allow(s) free rotation? Select ALL that apply. H H :0: 2 H=C=c———0 CH Bond 3 Bond 1 Bond 2 Question 4 1 pts What are the hybridizations of atoms 1, 2, and 3, respectively in the structure below? 10: C2 sp2 sp2 03 sp sp sp spº sp sp2 sp sp3 ОЕ OD
05 Question (1 point) Select all of the bonds about which free rotation can occur. 1st attempt See Periodic Table See Hint
Choose the eclipsed and staggered Newman conformations for 3-methylpentane down the 2-3 bond. Select ALL that apply HH г на нсн, H нн CHз н Нас. н Et CHз Et Et Нас. Нас H н HH Et нCH, EH нн L Нас. CH3з Н Et н Н. Et Et Et Нас. н Нас H Н CHз Нас. н Et г нае. CH3 HEt I I I т. I I L L
In the molecule below, which carbons have bond angles of 180∘?
Select all that apply.
A condensed structural formula for C H subscript 2 C H C H
subscript 2 C C H. The numbers 1 through 5 are above the carbon
atoms in sequence from left to right.
Select all that apply:
1
2
3
4
5
1 2 3 45 CH2CHCH CCH
What is/are the product(s) for
the following reaction? Select all that apply.
What is are the products for the following reaction Select all that apply. 1.03 2. DMS | HH
Question 5 of 24 > Which of these molecules are ketones? Check all that apply. OB DA HH Гр OF H3C—0_CH
a For these transitions, which ones involve the ground state? (Select all that apply.) On=5 to n=3 n=1 to n = 4 n=2 to n=4 n=5 to n=2 b For these transitions, which one involves the greatest energy change? On=5 to n=3 n=1 to n = 4 On=2 to n=4 On=5 to n=2 For these transitions, which one absorbs the most energy? On=5 to n = 3 On=1 to n=4 n=2 to n= 4 n=5 to n=2
help!
Question 1 (1.25 points) Which of the following carbohydrates contain ketohexoses? (Select all that apply.) Sucrose Fructose Lactose Starch Cellulose Question 2 (1.25 points) Which of the following functional groups in a carbohydrate are able to be oxidized to carboxylic acids? (Select all that apply.) Alcohols Ketones that are rearranged in solution. Aldehydes Ketones that are not rearranged in solution. Question 3 (1.25 points) Which of the following carbohydrates were reducing sugars? (Select all that apply.) Sucrose Cellulose Starch...
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