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...

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physical chemistry Roughly, what is the error introduced by the solution of some of the CO2 in the water in the bomb? The solubility of CO2 is about 0.0015 g/mL at 25°C and 1 atm CO2 pressure. The heat of solution of CO2 in a dilute aqueous solution is roughly -19.4 kJ/mol. Assume that the final CO2 pressure is 2 atm and that Henry's Law applies.
4
A student dissolved 20 mg of caffeine in 20 mL of water. The student carried out two extractions using 20 mL of dichloromethane in each one. Caffeine solubility in water: 2.17 g / 100 mL at 25 ° C Caffeine solubility in dichloromethane: 10.0 g / 100 mL at 25 ° C Present the calculations in detail below. A. Determine the distribution coefficient. b. Determine the amount of caffeine obtained in the first extraction. C. Determine the amount of caffeine obtained in the second extraction. 77 D. Determine the total amount of caffeine extracted during the entire process. and E.Determine the percent recovery.
The ethyl acetate (CH3COOC2H5) concentration in an alcoholic solution was determined by diluting a 10.00-mL sample to 100.00 mL. A 20.00-mL aliquot of the diluted solution was refluxed with 40.00 mL of 0.04672 M KOH: ethyl acetate.JPG After cooling, the excess KOH was back-titrated with 3.85 mL of 0.04644 M H2SO4. Calculate the %(w/v) CH3COOC2H5 in the alcoholic solution. MM CH3COOC2H5: 88.11 MM NaOH: 40.00 MM H2SO4: 98.08
1. A wastewater sample has the following composition: NO3 = 37 mg/L as N CO3²-2.5 x 10 mol/L PO4³ = 10 meq/L Ca²+ = 75 mg/L as CaCO3(s) Express each of the above concentrations in mg/L, mol/L, meq (of charge)/L, and ppm. Make and list any necessary assumptions. Show your work and summarize the results in a table.
In normal phase TLC, the mobile phase is + polar than the stationary phase. Consider the TLC plate below, which was developed using a 25% ethyl acetate:hexane solution. If this same mixture of compounds was developed on a TLC using a 50% ethyl acetate:hexane solution, the orange spot would A mixture of two compounds was developed on a TLC plate. The result is shown below. What is one thing the chemist can do to get better results? In normal phase TLC, the mobile phase is : polar than the stationary phase. Consider the TLC plate below, which was c exane solution. If this same mixture of compounds was developed on a TLC using a 50% ethyl acetate:hexane solution, the orange spot would less sometimes more, sometimes less more A mixture of two compounds was developed on a TLC plate. The result is shown below. What is one thing the chemist can do to get better results?
You use paper chromatography to separate the following two molecules. The stationary phase is coated with hexane C6H14 and the mobile phase is water. Which molecule will travel furthest up the paper? Explain using intermolecular forces between molecule and water. OH OH Phenol Napthol
Help with the following question. Ksp for Co(OH)2 is 5.02 x 10^-6
Please don't provide handwritten solution...
Which is correct? Random errors affect accuracy and systematic errors affect precision. An accurate result shows agreement with the true or accepted value. Precise results can contain significant random error, but little systematic error. The standard deviation is a good measure of accuracy. Polydimethylsiloxane (PDMS) stationary phases have low polarities. Which of the following statements is TRUE about gas chromatography using PDMS stationary phases? The gas chromatography column is typically packed with silica microparticles. An oven is used to control the column temperature because a constant temperature is always needed in gas chromatography Octane (C8H18, boiling point: 126 ºC) is eluted later than dodecane (C12H26, boiling point: 216 ºC) 3-Pentanone ((C2H5)2CO, boiling point: 102 ºC) is eluted later than propanol (CH3CH2CH2OH, boiling point: 97 ºC)
A 500.00 mg vitamin C (MW176.12g/mol) tablet was ground, acidified, and dissolved in H20 to make a 250.0 mL solution. A 50.00 mL aliquot containing vitamin C, KI and starch was analyzed and titrated with 12.31 mL of 0.01042 M KIO3. What is the % (w/w) vitamin C in the tablet? KIO3 + 5 KI + 6 H* = 3 12 + 6 K* + 3 H20 C6H8O6 + 12 = C6H6O6 + 21 + 2H* %3D 3.39 % 33.89 % 67.77 % 22.59 %
An experiment was done : Synthesis of a potential enzyme inhibitor The product achieved from the experiment was 4.0g. Using the picture provided determine the percentage yield.

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