What do two double doublets between 7.6 and 7.8 ppm with 2 + 2 hydrogen, mean...
What do two double doublets between 7.6 and 7.8 ppm with 2 + 2 hydrogen, mean and why?
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What do two double doublets between 7.6 and 7.8 ppm with 2 + 2
hydrogen, mean...
Data Interpretation - 'H NMR > 14 12 10 8 6 4 2 0 HSP-49-414 ppm...
Data Interpretation - 'H NMR > 14 12 10 8 6 4 2 0 HSP-49-414 ppm What types of compounds do peaks at 7.6 - 8.7 correspond to? O Alcohols O Aldehydes O Aromatics O Carboxylic acids The peaks at 7.6 - 8.7 are a triplet and two doublets, which altogether integrate to 4 protons. What does this suggest about the structure of the molecule? O No structural information can be determined from this. The presence of a mono-substituted phenyl...
the compound is dibenzalacetone -NMR (expansion 7.0-7.8 ppm (400 MHz) in CDC13 7.76 7.72 DO 7.07 Solvent peak (ig...
the
compound is dibenzalacetone
-NMR (expansion 7.0-7.8 ppm (400 MHz) in CDC13 7.76 7.72 DO 7.07 Solvent peak (ignorel) 7.80 7.75 7.70 7.65 7.60 7.55 7.50 7.45 7.40 7.35 7.30 7.25 7.20 7.15 7.10 ppm 18 Peak List for 1H NMR (8 in ppm) TH NMR (draw labelled structure here) (10 marks) Multiplicity Chemical shift 8 (ppm, 4 decimal places) Coupling constant Integral J (Hz) Assignment indicate whether it is a singlet (s) doublet (a), triplet 3. quartet (allor dd...
What does the following element description actually mean? hydrogen-2 Question 11 options: two hydrogen atoms a...
What does the following element description actually mean? hydrogen-2 Question 11 options: two hydrogen atoms a molecule of hydrogen gas a hydrogen with one neutron and one proton a hydrogen with two protons a hydrogen with two neutrons
How to determine number of peaks multiplicity and ppm? 10) 2. For each type of hydrogen...
How to determine number of peaks multiplicity and ppm?
10) 2. For each type of hydrogen labeled in the molecule below, provide the number of peaks (multiplicity ass,dit., etc) expected in the resonance, and also the approximate expected chemical shift, in ppm, for that resonance. Ha L CH₂CH) Hydrogen (skip b) for example, b= s(singlet) at about 2.5ppm Multiplicity (s,d,t,q,etc.) Approximate chemical shift in ppm 5) 3. In a typical CNMR spectrum why are all the resonances singlets?
Ml of river water with BODs of 1000 ppm is diluted to 1 L, aerated and seeded. The If 2 disolved ...
ml of river water with BODs of 1000 ppm is diluted to 1 L, aerated and seeded. The If 2 disolved oxygen content was 7.8 mg/L initially. After 20 days, the dissolved oxygen ssolv content had dropped to 5.3 mg/L. What is the ultimate BOD, and remaining BOD? Which of the two BODs give better prediction of BODL, and why?
ml of river water with BODs of 1000 ppm is diluted to 1 L, aerated and seeded. The If 2...
A recent national survey found that high school students watched an average (mean) of 7.8 movies...
A recent national survey found that high school students watched an average (mean) of 7.8 movies per month with a population standard deviation of 0.5. The distribution of number of movies watched per month follows the normal distribution. A random sample of 30 college students revealed that the mean number of movies watched last month was 7.3. At the 0.05 significance level, can we conclude that college students watch fewer movies a month than high school students? State the null...
A recent national survey found that high school students watched an average (mean) of 7.6 movies...
A recent national survey found that high school students watched an average (mean) of 7.6 movies per month with a population standard deviation of 0.5. The distribution of number of movies watched per month follows the normal distribution. A random sample of 41 college students revealed that the mean number of movies watched last month was 7.0. At the 0.05 significance level, can we conclude that college students watch fewer movies a month than high school students? State the null...
The two helices in the DNA double helix are held together by a) bonding between sugar...
The two helices in the DNA double helix are held together by a) bonding between sugar and phosphate groups. b) the overlap of a purine base on one helix with a purine base on the other helix. c) the overlap of a pyrimidine base on one helix with a pyrimidine base on the other helix. d) hydrogen bonding between deoxyribose units. e) hydrogen bonding between a base on one helix and its complementary base on the other helix.
1) Do you think there is a linear correlation between Movie Ratings and their Runtimes?
Movie Ratings8.78.97.67.27.28.18.86.88.79.08.57.98.79.19.07.28.47.57.79.09.38.76.99.28.49.29.09.18.98.29.48.38.17.99.18.78.67.88.47.8Movie runtimes201124136155131161110132116136911279612612913512411617012117511818911713610819589881221191161261151531431181291441321) Do you think there is a linear correlation between Movie Ratings and their Runtimes? Explain why or why not before doing any work!2) Is there a linear correlation between the data based on the correlation coefficient? Explain.3) Find the linear regression line and explain what it means in English.4) Perform a hypothesis test at the 5% level of significance to see if a correlation is significant.
what is the potential difference between a point 0.79mm from a charge of 7.6 nC and...
what is the potential difference between a point 0.79mm from a charge of 7.6 nC and a point ar infinity? (kc = 8.99 x 10^9 Nm^2/C^2)
Data Interpretation - 'H NMR > 14 12 10 8 6 4 2 0 HSP-49-414 ppm What types of compounds do peaks at 7.6 - 8.7 correspond to? O Alcohols O Aldehydes O Aromatics O Carboxylic acids The peaks at 7.6 - 8.7 are a triplet and two doublets, which altogether integrate to 4 protons. What does this suggest about the structure of the molecule? O No structural information can be determined from this. The presence of a mono-substituted phenyl...
the
compound is dibenzalacetone
-NMR (expansion 7.0-7.8 ppm (400 MHz) in CDC13 7.76 7.72 DO 7.07 Solvent peak (ignorel) 7.80 7.75 7.70 7.65 7.60 7.55 7.50 7.45 7.40 7.35 7.30 7.25 7.20 7.15 7.10 ppm 18 Peak List for 1H NMR (8 in ppm) TH NMR (draw labelled structure here) (10 marks) Multiplicity Chemical shift 8 (ppm, 4 decimal places) Coupling constant Integral J (Hz) Assignment indicate whether it is a singlet (s) doublet (a), triplet 3. quartet (allor dd...
How to determine number of peaks multiplicity and ppm?
10) 2. For each type of hydrogen labeled in the molecule below, provide the number of peaks (multiplicity ass,dit., etc) expected in the resonance, and also the approximate expected chemical shift, in ppm, for that resonance. Ha L CH₂CH) Hydrogen (skip b) for example, b= s(singlet) at about 2.5ppm Multiplicity (s,d,t,q,etc.) Approximate chemical shift in ppm 5) 3. In a typical CNMR spectrum why are all the resonances singlets?
ml of river water with BODs of 1000 ppm is diluted to 1 L, aerated and seeded. The If 2 disolved oxygen content was 7.8 mg/L initially. After 20 days, the dissolved oxygen ssolv content had dropped to 5.3 mg/L. What is the ultimate BOD, and remaining BOD? Which of the two BODs give better prediction of BODL, and why?
ml of river water with BODs of 1000 ppm is diluted to 1 L, aerated and seeded. The If 2...
The two helices in the DNA double helix are held together by a) bonding between sugar and phosphate groups. b) the overlap of a purine base on one helix with a purine base on the other helix. c) the overlap of a pyrimidine base on one helix with a pyrimidine base on the other helix. d) hydrogen bonding between deoxyribose units. e) hydrogen bonding between a base on one helix and its complementary base on the other helix.
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