2. Consider the following example GC Chromatogram from a publication about aggression amongMediterranean Acrobat Ants (C. scutellaris). This particular sample was generated by rinsinghydrocarbons from ant exoskeletons. From the chromatogram, what is the minimum number ofunique compunds present in the sample? What data led you to that conclusion?(Don't overthink it)280000007000000600000050000004000000300000020000001000000Counts (Abundance)51967023.0024.0010|1113172014151612teel|2219 21ли25.0026.0027.00Time"Example of a Gas chromatography-Mass spectrography (GS-MS) chromatogram of hydrocarbon molecules in C. scutellaris" by FilippoFrizzi, et.al, in PLoS One is licensed under CC BY 4.0

A total of 22 CHCs were recorded by GC-MS analysis in the chemical profile of the ants. The most…

Answered: 2. Consider the following example GC…

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...

See similar textbooks

Similar questions

b) The thermogravimetric curve for calcium salicylate monohydrate (CaC14H1006-H20) is shown below. (mw 332 g/mol). Starting with an initial sample mass of 16.55 mg, calculate the mass of the sample remaining when it is heated to ) 350 oc and ii) 800 oc. The first step is loss Of H20 (mw 18 g/mol), followed by loss Of C703H6 (mw 138 g/mol), then C6H4 (mw 76 g/mol) and finally CO2 (mw 44 g/mol). Give your answers to two decimal places and show your work. CaC,,HO, H.O CaC.,H,0 of 20- 40 CaC,0.H, 60- CACO, CaO 80 100 200 400 600 800 100 Temperature (C)
1. From spinach, the chromatographic analysis will yield two major substances: (a) B-carotene (C40H56), which will separate from the spinach mixture to form a yellow band, and (b) chlorophyll A (CSSH72MGN4OS), which will separate from the mixture to form a green band. i. Describe the characteristics and draw structures of these molecules. ii. From the spectrophotometric analysis, what wavelength (Amax) would you expect ß-carotene (C40H56) to absorb? What wavelength would chlorophyll A (CssH72MgN4O5) absorb?
Please propose a chromatography-based strategy to purify human insulin proteins that have been expressed in bacterial cells.
Choose the correct statement considering the Avogadro No. estimation: The use of 2mL in measuring the number of drops is to decrease the uncertainty We used a surface area of a square The fatty acid is used for its proprietary as hydrophilicityl only Each 2mole contain 6.022 x 10^{23}
A kinetic study of an intestinal peptidase using glycylglycine as the substrate produced the experimental data shown in the table. glycylglycine + H₂O → 2 glycine [S] (MM) 1.5 2.0 3.0 4.0 8.0 16.0 Calculate the standard error of regression (SER) for the Lineweaver-Burk slope and the Eadie-Hofstee slope to compare the precision of each. Lineweaver-Burk SER: Eadie-Hofstee SER: Product formed (μmol min¹¹) 0.21 0.24 0.28 0.33 0.40 0.45 0.092 Incorrect Incorrect 0.012 μmol min-1 μmol min-1
The graph below shows approximate plots of lnP vs. T-1 for three compounds: methanol (CH3OH), methyl chloride (CH3Cl), and propane propane (C3H8), where P is the vapor pressure of the liquid. Match the lines with the compounds. A) A = propane, B = methanol, C = methyl chloride B) A = methyl chloride, B = methanol, C = propane C) A = propane, B = methyl chloride, C = methanol D) A = methanol, B = propane, C = methyl chloride E) A = methanol, B = methyl chloride, C = propane
3. A student administered ibuprofen to a lab mice orally. She would like to find out the amount of ibuprofen in blood plasma at a specific time using HPLC. The chromatographic peak areas after 2 hours, 4 hours, and 8 hours are 38.34, 20.5, and 14.95 respectively. What is the concentration of ibuprofen in the plasma at each aforementioned time? Below is the corresponding peak area of the 5 ibuprofen standards. Standard Concentration (mg/mL) Peak area 5.02 0.5 1.0 10.05 2.0 17.15 3.0 19.79 6.0 39.72
1. You have determined the mp of pure Urea and pure Cinnamic acid. Here is your actual data: Urea: mp 132.5C-133.0 °C Cinnamic acid: mp 132.5C-133.0 °C 2. You have determined the mp of mixtures of urea and cinnamic acid. Here is your actual data: 1:4 (20% and 80%) urea/cinnamic acid: mp 104.5-114.6°C 1:1 (50% each) urea/cinnamic acid: mp 103.0-109.4°C 4:1 (80% and 20%) urea/cinnamic acid: mp 113.5-126.9°C In the data section of your report present your data in tabular format. Use your data (mp of Urea, cinnamic acid, and mp of the three mixtures) to construct a melting point (on the Y-axis) versus composition (% composition on the X-axis) diagram, like the one on the left below, in your report. Do not include the mp of your unknown (a common student mistake)
1) a)What is affinity chromatography and what is it used for? b) A drug called Bamlanivimab is used to treat infections with SARS-CoV-2 (Covid-19).This drug was developed by isolating antibodies from the serum of a patient who recovered from Covid-19.What is possibly on the stationary phase in a column used to isolate antibodies to SARS-CoV-2? How are the antibodies eluted off the column to isolate them for drug development?
In normal-phase HPLC chromatography, the stationary phase is polar and the mobile phase is nonpolar. In the reversed phase we have just the opposite; the stationary phase is nonpolar and the mobile phase is polar. Describe molecules in which move faster or slower in each case.
A student performed chromatography on a mixture of benzoic acid (C6H5CO₂H), acetophenone (C6H5C(O)CH3) and styrene (C6H5CHCH₂). She used alumina (Al₂O3) as the stationary phase and a 9 : 1 mixture of hexane : ethyl ethanoate as the mobile phase. Rank the order in which the compounds moved, from fastest to slowest. benzoic acid acetophenone styrene
Imagine you are attempting to separate these three dipeptides from each other using anion exchange chromatography, and you use a protein assay to identify at what salt concentration each of them is eluted from the column. A graph showing protein concentration as a function of salt concentration is shown below the dipeptides. Which of the three dipeptides is represented by peak #3? (NOTE: the dipeptides are shown in their non-ionized forms. You must assume that they are in aqueous solution at physiological pH, ~7.2) a) Dipeptide A b) Dipeptide B c) Dipeptide C

SEE MORE QUESTIONS

Recommended textbooks for you

Chemistry

ISBN:

9781305957404

Author:

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

Publisher:

Cengage Learning

Chemistry

ISBN:

9781259911156

Author:

Raymond Chang Dr., Jason Overby Professor

Publisher:

McGraw-Hill Education

Principles of Instrumental Analysis

Chemistry

ISBN:

9781305577213

Author:

Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:

Cengage Learning

Chemistry

ISBN:

9781305957404

Author:

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

Publisher:

Cengage Learning

Chemistry

ISBN:

9781259911156

Author:

Raymond Chang Dr., Jason Overby Professor

Publisher:

McGraw-Hill Education

Principles of Instrumental Analysis

Chemistry

ISBN:

9781305577213

Author:

Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:

Cengage Learning

Organic Chemistry

Chemistry

ISBN:

9780078021558

Author:

Janice Gorzynski Smith Dr.

Publisher:

McGraw-Hill Education

Chemistry: Principles and Reactions

Chemistry

ISBN:

9781305079373

Author:

William L. Masterton, Cecile N. Hurley

Publisher:

Cengage Learning

Elementary Principles of Chemical Processes, Bind…

Chemistry

ISBN:

9781118431221

Author:

Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard

Publisher:

WILEY

SEE MORE TEXTBOOKS