ucumberlands.blackboard.com Remaining Time: 40 minutes, 25 seconds. Question Completion Status: A Moving to another question will save this response. Question 5 In H-NMR spectrum, which chemical shift and multiplicity combination corresponds to the following compound? O1.26 quartet, 3.7 singlet, 4.0 triplet 1.5 6 singlet, 1.0 doublet, 4.0 triplet 1.26 triplet, 3.7 singlet, 4.0 quartet 1.5 6 triplet, 3.7 triplet, 4.0 doublet 3.0 6 triplet, 2.0 doublet, 3.0 doublet A Moving to another question will save this response. MacBook Air go F3 000 II F8 F1 F2 F4 F7 F9

ucumberlands.blackboard.com Remaining Time: 40 minutes, 25 seconds. Question Completion Status: A Moving to another question will save this response. Question 5 In H-NMR spectrum, which chemical shift and multiplicity combination corresponds to the following compound? O1.26 quartet, 3.7 singlet, 4.0 triplet 1.5 6 singlet, 1.0 doublet, 4.0 triplet 1.26 triplet, 3.7 singlet, 4.0 quartet 1.5 6 triplet, 3.7 triplet, 4.0 doublet 3.0 6 triplet, 2.0 doublet, 3.0 doublet A Moving to another question will save this response. MacBook Air go F3 000 II F8 F1 F2 F4 F7 F9

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Why is it that D hydrogens have a higher chemical shift than the E hydrogens? Aren't the D hydrogens less shielded than the E hydrogens which have carbons surrounding on both sides? And less shielding means higher chemical shift required?
May you please help me with this ochem question?
Counterfeit drugs are a common problem in developing regions of the world. Oftentimes, counterfeit pills are made with compounds such as lactose. A lab technician has obtained the IR spectrum shown above for a sample reported to be citalopram, an antidepressant drug. Does the IR spectrum belong to citalopram or lactose? Explain your answer by describing what feature of the IR spectrum confirms your choice and describe what feature is missing from the IR spectrum for the other compound. A. citalopram B. lactose
1. What do you suppose is the molecular weight of the molecule that gives the mass spectrum below? 27 Hai 55 26 45 30 40 50 Rel Abund 100r 80- 60- 40- 20- 0- m/z0 10 Rel Abund = Relative Abundance Formula 1: 20 Formula 2: Formula 3: m/z = mass divided by charge 3. What is the base peak? 2. Provide three different molecular formulas (organic molecules, please) that are possible for a molecule with the molecular weight you have chosen. What are the degrees of unsaturation (SODAR) for each? Degrees of unsaturation: Degrees of unsaturation: Degrees of unsaturation: 60 4. Draw a possible molecule for each formula. based on Formula 1 5. Which structure do you think is correct? 72 70 based on Formula 2 80 What mass is lost from the molecular ion to get to the base peak? 90 100 based on Formula 3
Compound 4, Formula + Unknown MS: M peak at 74 C-NMR: There Z are (3) signals. Compound 4, Formula Unknown MS: M* peak at m/z 74 100 90 80 70 60 50 40 30 20 10 of 4000 mmm 1 H 3500 11-12 ppm 3000 C-NMR: There are (3) signals. 2500 2000 1800 1600 1400 1200 1000 800 2 H 3 H
Please do clearly Simple question
8 16) Chemical Formula: C.H₂O₂ IR: strong peak 1720cm-1 3H 17) Chemical Formulae: C12H18 4H, Doublet Triplet Triplet Doublet 3 5H Unknowns for 1H NMR Final Report 6 5 18) Chemical Formula: C₂H120 IR: Strong broad peak at 3200 cm-¹ 2H 5 1H 2 PPM 4 PPM 1H Quartet, 2H PPM 3 3H Singlet, 9H Triplet, 3H 2H 3H 0