1) Consider the data in the table below for chromatograms collected on different lengths of gas chromatography columns. Answer the following questions using Excel. L = 15 m L = 30 m L = 60 m Species tR (min) W1/2 (min) 4R (min) W1/2 (min) tR (min) W1/2 (min) 1 1.290 0.016 2.581 0.023 5.147 0.031 2 1.309 0.016 2.616 0.023 5.222 0.032 3 1.332 0.017 2.664 0.024 5.325 0.034 4 1.401 0.018 2.804 0.025 5.616 0.036 a. Calculate both the average number of plates and the average plate height (in µm) for each column, considering all four species. b. Calculate the measured resolution between peaks 1 and 2, 2 and 3, and 3 and 4 for each column.

1) Consider the data in the table below for chromatograms collected on different lengths of gas chromatography columns. Answer the following questions using Excel. L = 15 m L = 30 m L = 60 m Species tR (min) W1/2 (min) 4R (min) W1/2 (min) tR (min) W1/2 (min) 1 1.290 0.016 2.581 0.023 5.147 0.031 2 1.309 0.016 2.616 0.023 5.222 0.032 3 1.332 0.017 2.664 0.024 5.325 0.034 4 1.401 0.018 2.804 0.025 5.616 0.036 a. Calculate both the average number of plates and the average plate height (in µm) for each column, considering all four species. b. Calculate the measured resolution between peaks 1 and 2, 2 and 3, and 3 and 4 for each column.

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter11: Intermolecular Forces And Liquids

Section11.6: Properties Of Liquids

Problem 1.2ACP

See similar textbooks

Similar questions

Hello, Can you please answer these 3 questions? Thank you!
I don't know if my answer is correct. Please use dimensional analysis as in the photo for the answer
What weight of mercury bichloride should be taken as sample, assuming 100% purity, so that 0.5 g og HgS will be obtained in a gravimetric analysis? Gravimetric factor = 1.1669
An HPLC method was developed for the separation and determination of ibuprofen in blood samples. A 3.00 mL blood sample dissolved in 70.00 mL solvent was prepared and 10.0 mL was injected into the HPLC. Standard ibuprofen solutions were also run.Calculate the ibuprofen present in the 3.00 mL blood sample The following data were obtained. Table po itoo: Ibuprofen concentration, mg/ml0.50 1.0 2.0 3.0 Blood sample Peak area (Right column)5.29.617.419.911.4
You have been provided with data of 2 groundwater samples. The following are the major constituents (in mg/l): Parameter Sample 1 Sample 2 Са 35 27 Mg 33 5.75 Na 28 16 K 1.3 0.7 НСОЗ 177 327 SO4 15 22 Cl 6.9 4.4 Boron 4.0 1.0 EC (dS/m) 0.511 0.237 TDS (mg/l) ? Tasks: 1. Check for Ionic balance. 2. Estimate TDS in mg/L 3. Show data in a. Vertical bar graph b. Vector diagram c. Pattern diagram d. Circular diagram e. Trilinear diagram f. Schoeller semilogarithmic diagram 4. Calculate %Na, SAR, Hardness 5. Discuss suitability of these waters for agricultural use. 6. Is this water suitable for drinking? What treatments will be needed to make it drinkable? 7. Is there any seawater intrusion in these aquifers? Expalin. 8. Make any other relevant comments
1. A 25-mL specific gravity bottle was found to weigh 46.05 g when filled with water, and 52.93 g when filled with the ophthalmic solution. If the empty specific gravity bottle weighs 21.04 g, what is the specific gravity of the ophthalmic solution? a 0.784 b 0.870 c 1.149 d 1.275
Six measurements are obtained for the mass of water delivered by a calibrated volumetric pipet: 4.518 g, 4.521 g. 4.520 g. 4.526 g, 4.518 g, and 4.521 g. Use a spreadsheet to determine the mean and 95% confidence interval of these measurements. mean: 95% confidence interval: %23
Can you please help me with 5
The following experimental data was collected by a student: 0.0020 M Fe(NO3)3 mL Trial 1 2 WIN 3 4 Blank 5.00 5.00 5.00 5.00 5.00 0.0020 KSCNmL 2.00 3.00 4.00 5.00 0.00 Water mL 3.00 2.00 1.00 0.00 5.00 5. STANDARD (18.00 mL 0.200 M Fe(NO3)3 mL +2.00 mL 0.0020 KSCN mL) Use the data given above to calculate K. for trial#1. (SHOW ALL STEPS!) ABS 0.251 0.344 0.428 0.559 0.000 ABS = 0.979
0+ 4000 A B RAVENEER NN 8.19 6.74 6.00 5.00 4.00 9.87 7.66 3.00 2.00 Peak A (3171 cm-1) = Peak B (1669 cm-1) = 1.00 0.00 1. Empirical Formula = C7H602 10.0 8.0 6.0 4.0 2.0 0.0 5/ppm
Note that the value of x is 0.74 Q1: The table below shows the Oxygen purity and Hydrocarbon levels observed in five tests performed in the laboratory. 0.99X 0.95X Hydrocarbon Level (x%) Oxygen Purity (y%) 1.46X 1.40X 1.11X 90.01 96.73 93.65 89.85 87.33 Compare the coefficients of variation v; then, compute E(Y -Y)², E(Y – Y)², square standard error Sz, and the correlation coefficient(r).
Match the units to the setup below for calculation of molarity X when dissolving a liquid X (X g)(density = D g X/mL X) in a liquid Y (Y mL)(density = D g Y/mL Y). All equations are set up so that the unit on the bottom cancels with the unit on the top to its immediate left. Be sure to match any unused answers to "Unused answer". X gx= 2._ = 7. _ 1.- 5._ X gX :+Y mL 6. mL X 1. 1. mol X/L 2. 2._ MW g X 3. 3. Dg X 4. 4._ 1000 mL 5. 5._ 6. 6._ 1 L 7. 7. 1000 L 8. Unused answer 1 mol X > > > > > > >