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3. For the following molecule CH, CH;C-CH2CH.CCH.CH CH3 a) Label the magnetically different H's on the...
Chem 10 Lab 10 3. A. For the following molecule CH: CHOCHCHICCHCHI: Tub c d e...
Chem 10 Lab 10 3. A. For the following molecule CH: CHOCHCHICCHCHI: Tub c d e a) Label the magnetically different il's on the molecule. b) Arrange the labels in the order you would expect (in descending ppm) from most deshielded to most shielded d >c>c sa abnost C What are the #H's in each signal? 3H 6=2H c=2H d=2 e = 34 What is the coupling pattern for each signal? a = Singlet b = tripht d) C =...
1. Which of the compounds listed below would you expect to have the highest boiling point? They all have approximately the same molecular weight.) a. CH CH CH CH CH b. CH3CH CH C2OH d. Cl,CH:CH,CI...
1. Which of the compounds listed below would you expect to have the highest boiling point? They all have approximately the same molecular weight.) a. CH CH CH CH CH b. CH3CH CH C2OH d. Cl,CH:CH,CI 2. How many 'H NMR signals would you expect from this compound? d.4 3. Arrange these compounds in order of reactivity for a nucleophilic substitution reaction using CH3O in CH:OH. List the most reactive compound first. a. 3 2> 1 d. 21 3 b....
QUESTION 7 How many magnetically different protons are in the following compound? CH3 H3c CH2 7...
QUESTION 7 How many magnetically different protons are in the following compound? CH3 H3c CH2 7 8 9 10 10 points Save Answer QUESTION 8 A very common NMR solvent is CDCI3. CDCl3 shows a single peak near 7.26 ppm in its proton NMR spectrum. But CDC13 shows three peaks near 79.5 ppm in its carbon NMR spectrum. True False QUESTION 9 Why does a proton NMR spectrum of the NMR solvent CDCl3 show a signal at 7.26 ppm even...
C-NMR and H-NMR, label both unambiguously. label the hydrogens a,b, and c’s and thr carbons 1,2,...
C-NMR and H-NMR, label both unambiguously. label the hydrogens a,b,
and c’s and thr carbons 1,2, and 3’s... then label all signs on the
NMR whith those corresponding numbers and letters. also show the
splinting patterns, which is the most shielded and most deshielded
CH, CH2 -CH2 - C-o- CH2-CH3 10
3. 14 points: Consider the two molecules below: Molecule A Molecule B CH(CH3)2 CH(CH3)2 1 CH...
3. 14 points: Consider the two molecules below: Molecule A Molecule B CH(CH3)2 CH(CH3)2 1 CH I ICH₃ 27 [ 2 CH3 a. Molecules A and B both have three chiral carbons (labeled 1, 2, and 3). How many unique stereoisomers does 1-isopropyl-2,3-dimethylcyclohexane have? b. Molecules A and B are pairs. C. Determine the configuration (R or S) of chiral carbons 1, 2, and 3 for both molecules. Chiral Carbon Molecule A Molecule B d. Draw the two 'chair' conformers...
1. How many non-equivalent protons are there in each of the molecule below? Label them (a, b, c, etc.) (0.3 pr, 0.23 pt...
1. How many non-equivalent protons are there in each of the molecule below? Label them (a, b, c, etc.) (0.3 pr, 0.23 pt each) B. CH3-CH=C=C-H CH3 epen 2. Predict the chemical shifts of all the labeled protons (Ha, Hb, Hc, Hd) in the structures below. Please note that the labeled protons could represent one or more equivalent H's. (1 pt, 0.5pt each) Hint: use the table below. TABLE 13-3 Typical Values of Chemical Shifts Type of Proton Type of...
8. How many chiral carbons are present for the following molecule? CH3 HO–CH2-CH2-C-CH=CH-CH3 NH2 a. 4...
8. How many chiral carbons are present for the following molecule? CH3 HO–CH2-CH2-C-CH=CH-CH3 NH2 a. 4 b. 3 c. 2 d. 1 e. none
2. Arrange the following in order of: (i) increasing reactivity with HCI. CH, CH CH H.C=C...
2. Arrange the following in order of: (i) increasing reactivity with HCI. CH, CH CH H.C=C nec nec 20 cm H.C=C CH HC=C CH, (b) H.C=C NHCH, CHOCH, ОСН, (a) (c) (d) Teast reactive most reactive (ii) increasing stability. CH CH3 CH (a) (C) least stable most stable (iii) increasing heat of hydrogenation. CH,CH, CH=CH2 C H.CH O CH.CH CH3 CH,CH; CH,CH, (0) lowest heat of hydrogenation
Rank the following carbocations in order of increasing stability. CH-C1 CH; C -CH-CT o C -CH3...
Rank the following carbocations in order of increasing stability. CH-C1 CH; C -CH-CT o C -CH3 CH-Cl CH; ܚ II INI a. (least stable) II < III < I (most stable) b. (least stable) I III < II (most stable) c. (least stable) III < II < 1 (most stable) d. (least stable) III III (most stable) e (least stable) I II III (most stable) (cast stable) III III (most stable) Arrange the following weak bases in order of expected...
1. How many different sets of "chemically equivalent protons" are on each of these different compounds?...
1. How many different sets of "chemically equivalent
protons" are on each of these different compounds?
2. Give the splitting pattern for the designated
protons on the following molecules.
3 Which type of spectroscopy can most easily be used
to tell these two compounds apart? (Note superscripted number
denotes mass number of isotope of oxygen)
10. Identify which compound best matches the following
spectral data.
1. How many different sets of "chemically equivalent protons" are on each of these different...
Chem 10 Lab 10 3. A. For the following molecule CH: CHOCHCHICCHCHI: Tub c d e a) Label the magnetically different il's on the molecule. b) Arrange the labels in the order you would expect (in descending ppm) from most deshielded to most shielded d >c>c sa abnost C What are the #H's in each signal? 3H 6=2H c=2H d=2 e = 34 What is the coupling pattern for each signal? a = Singlet b = tripht d) C =...
1. Which of the compounds listed below would you expect to have the highest boiling point? They all have approximately the same molecular weight.) a. CH CH CH CH CH b. CH3CH CH C2OH d. Cl,CH:CH,CI 2. How many 'H NMR signals would you expect from this compound? d.4 3. Arrange these compounds in order of reactivity for a nucleophilic substitution reaction using CH3O in CH:OH. List the most reactive compound first. a. 3 2> 1 d. 21 3 b....
QUESTION 7 How many magnetically different protons are in the following compound? CH3 H3c CH2 7 8 9 10 10 points Save Answer QUESTION 8 A very common NMR solvent is CDCI3. CDCl3 shows a single peak near 7.26 ppm in its proton NMR spectrum. But CDC13 shows three peaks near 79.5 ppm in its carbon NMR spectrum. True False QUESTION 9 Why does a proton NMR spectrum of the NMR solvent CDCl3 show a signal at 7.26 ppm even...
C-NMR and H-NMR, label both unambiguously. label the hydrogens a,b,
and c’s and thr carbons 1,2, and 3’s... then label all signs on the
NMR whith those corresponding numbers and letters. also show the
splinting patterns, which is the most shielded and most deshielded
CH, CH2 -CH2 - C-o- CH2-CH3 10
3. 14 points: Consider the two molecules below: Molecule A Molecule B CH(CH3)2 CH(CH3)2 1 CH I ICH₃ 27 [ 2 CH3 a. Molecules A and B both have three chiral carbons (labeled 1, 2, and 3). How many unique stereoisomers does 1-isopropyl-2,3-dimethylcyclohexane have? b. Molecules A and B are pairs. C. Determine the configuration (R or S) of chiral carbons 1, 2, and 3 for both molecules. Chiral Carbon Molecule A Molecule B d. Draw the two 'chair' conformers...
1. How many non-equivalent protons are there in each of the molecule below? Label them (a, b, c, etc.) (0.3 pr, 0.23 pt each) B. CH3-CH=C=C-H CH3 epen 2. Predict the chemical shifts of all the labeled protons (Ha, Hb, Hc, Hd) in the structures below. Please note that the labeled protons could represent one or more equivalent H's. (1 pt, 0.5pt each) Hint: use the table below. TABLE 13-3 Typical Values of Chemical Shifts Type of Proton Type of...
8. How many chiral carbons are present for the following molecule? CH3 HO–CH2-CH2-C-CH=CH-CH3 NH2 a. 4 b. 3 c. 2 d. 1 e. none
2. Arrange the following in order of: (i) increasing reactivity with HCI. CH, CH CH H.C=C nec nec 20 cm H.C=C CH HC=C CH, (b) H.C=C NHCH, CHOCH, ОСН, (a) (c) (d) Teast reactive most reactive (ii) increasing stability. CH CH3 CH (a) (C) least stable most stable (iii) increasing heat of hydrogenation. CH,CH, CH=CH2 C H.CH O CH.CH CH3 CH,CH; CH,CH, (0) lowest heat of hydrogenation
Rank the following carbocations in order of increasing stability. CH-C1 CH; C -CH-CT o C -CH3 CH-Cl CH; ܚ II INI a. (least stable) II < III < I (most stable) b. (least stable) I III < II (most stable) c. (least stable) III < II < 1 (most stable) d. (least stable) III III (most stable) e (least stable) I II III (most stable) (cast stable) III III (most stable) Arrange the following weak bases in order of expected...
1. How many different sets of "chemically equivalent
protons" are on each of these different compounds?
2. Give the splitting pattern for the designated
protons on the following molecules.
3 Which type of spectroscopy can most easily be used
to tell these two compounds apart? (Note superscripted number
denotes mass number of isotope of oxygen)
10. Identify which compound best matches the following
spectral data.
1. How many different sets of "chemically equivalent protons" are on each of these different...
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