Q: What factor allows molecules to be separated by chromatography?
A: Chromatography is a method which is used to separate, identify and purify the components of a…
Q: Why is a suppressor used in ion chromatography?
A: Ion chromatography- It is used for water chemistry analysis. Ion chromatography helps in measuring…
Q: How can controlled potential coulometry detect the analyte?
A: Controlled potential coulometry, as the name suggests, is a coulometry method that measures the…
Q: How chromatogram is developed in thin layer chromatography?
A: Chromatography is a technique used to separate mixture of substances into their components. It…
Q: What can I determine in portable NIR? How can I determine the authenticity of my samples in portable…
A:
Q: Describe the sample properties that would be suitable for; i) Gas chromatography (GC) analysis ii)…
A: GS and HPLC are the techniques to separate compounds from mixtures .These are nalytical methods of…
Q: 8. Which solution is of known concentration that is used to react completely with an analyte? D.…
A: Standard solution is used to react completely with an analyte.
Q: Metal ions chelate polar groups of analyte molecules for longer retention time. Does this affect…
A: HPLC is based on the principle where the sample (analyte) is distributed between a mobile phase…
Q: As the temperature of a gas chromatography column increases, the the retention time of the analyte…
A: Gas chromatography is a technique used for the separation of compounds and analyzing the compound…
Q: What variables must be controlled if satisfactory qualitative data are to be obtained from…
A: ANSWER IS DISCUSSED BELOW
Q: solvent front origin
A: In thin layer chromatography the compounds separate based on polarity, the more polar compound move…
Q: The retention factor for analytes in a sample lie between 1 and 5 why?
A: The analyte is the substance to be separated during chromatography. It is also normally what is…
Q: A chromatogram from a certain column has a peak with a w1/ 2 of 12 mm and a tr of 650 mm as…
A: Given, Width of half peak height , w12= 12 mm retention time , tr = 650 mm
Q: Which of the following statements is .14 ?incorrect Number of theoretical plates decreases .with…
A: Solution
Q: what is chromatography? Explain different types of chromatography and explain how to seperate…
A: Chromatography is a laboratory technique. It is use for the separation of the components or solutes…
Q: The portions of the sample having the analyte with similar composition analyzed using the same…
A: The portions of the sample having the analyte with similar composition analyzed using the same…
Q: What are the different technical considerations in performing the serum protein electrophoresis…
A: Answer - The serum protein electrophoresis (SPEP) test measures specific proteins in the blood to…
Q: Why chromatography is an important tool for analysis of organic compounds?
A: Chromatography is the most useful technique for identification or separation of different compounds…
Q: Why asbestos is used in chromatography ?
A: asbestos : "The crude mineral is a piece of rock or stone. It has been called a physical paradox…
Q: differences
A: Both are the types of the liquid chromatography which are used to seperate the different components…
Q: 9. Which of the following solvents is used in normal phase elution in HPLC? a) Ethanol: Water b)…
A:
Q: How can you use ion-exchange chromatography to de-ionize water?
A: How can you use ion-exchange chromatography to de-ionize water?
Q: What types of columns are used in HPLC in chromatography?
A: HPLC stands for high performance liquid chromatography which is used as a separation technique in…
Q: 2. Different marker inks were analyzed using a simple paper chromatography experiment. Two marker…
A: To calculate the retention factor of each spot from A to E.
Q: How are analytes usually recovered after SFC or SFE?
A: Step 1 of 1 SFE is supercritical fluid extraction, in which components in a mixture are…
Q: An unretained solute is eluted from a GC column in 1.80 min. Decane (C10H22) is eluted in 15.63 min…
A:
Q: What kind of samples can be analyzed by AFM? What are the applications of AFM?
A: Atomic Force Microscopy (AFM) is a powerful technique that can image virtually any type of surface,…
Q: Find the ksp of PbCl2 5.0 g od pbcl2 100ml of h2o
A: GIVEN DATA: given mass of PbCl2: 5gm Molar mass of PbCl2 is 278.1gmol-1 water = 100ml
Q: Does KMNO4 oxidize or reduce an analyte during permanganimetry?
A: Permanganometry is a quantitative analytical method. It is a redox titration that uses potassium…
Q: Suggest two possible applications for paper chromatography other than the separation of dyes or the…
A: Paper chromatography is a technique used for separation of components of a mixture. In paper…
Q: How to prepare the sample (digestion) for ICP-MS and AA analysis?
A: Sample preparation in ICP-MS i.e., Inductively coupled plasma mass spectrometry; ICP-MS is used for…
Q: Explain the following terms used in chromatography i) Dead time ii) Number of theoretical plates
A: Several factors contributes towards the separation efficiency of any given column in chromatography…
Q: Preparing a Thin Layer Chromatography experiment there are some common mistakes. Explain what…
A: Interpretation- To tell about all the common mistakes when we prepare a thin layer chromatography…
Q: Why do we use the LC (or HPLC) and GC in water analysis? What kind of analytes can be separated ?
A: Gas chromatography (GC) is the chromatographic technique that separates the constituents of a…
Q: The uses of thin layer chromatography are: 1) To identify unknown compounds 2) Determine purity of…
A: The correct answer is given below.
Q: A 0.32 g soil sample was digested and diluted to 481-mL. The diluted sample was analyzed for Zn by…
A: We are authorised to solve only one question at a time. Please post rest of the questions…
Q: What compounds present in a sample that can cause error in the analysis and alter desired results?…
A: Interpretation - We have to tell that due to which compounds present in a sample that can cause…
Q: Briefly explain how cation exchange chromatography can used in protein separation?
A: Cation exchange chromatography is a form of ion exchange chromatography (IEX), which is basically…
Q: 24. In paper chromatography, a rectangular piece of filter paper serves as the 24. A. mobile phase…
A: Paper chromatography was discovered by Synge and Martin in the year 1943. In paper chromatography,…
Q: Professor Forni has hired you as a research assistant and you need to make an X-gal staining…
A: Required concentration of MgCl2 = 2mM = 0.002…
Q: Calculate initial concentrations added to the test tube. (Fe+3 and SCN-1) 5 mL of 0.002 M Fe(NO3)3,…
A:
Q: pound on the accuracy of detection of a particular analyte?
A: Accuracy is measured by spiking the sample matrix of interest with a known concentration of analyte…
Q: What is the detection limit of GC-FID in terms of analyzing samples such as water with oil
A: The full form of GC-FID is Gas chromatography-Flame ionization detection. Gas Chromatography is one…
Q: 4. Enumerate the differences between a serological and a volumetric pipette. 5. Enumerate the uses,…
A: Pipettes are one of the most important instruments in the analytical measurements that help us in…
Q: 35. The stationary phase, as well as mobile phase, are liquid in Adsorption column chromatography…
A: Answer: Chromatography is a separation technique, in which we separate the components of a mixture…
Q: 1) a)What is affinity chromatography and what is it used for? b) A drug called Bamlanivimab is…
A:
Q: All chromatographic techniques can be used as separation methods. True O False
A:
How analytes are recovered from SFC and SFE
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- How are analytes usually recovered after SFC or SFE?Why chromatography is an important tool for analysis of organic compounds?■ True or False: in a TOF analyzer, a fragment of low mass reaches the detector first ▪ In GCMS when we know what analytes we are measuring we use not know what analytes are in the sample we use than scan. ▪ A) Scan; SIM ■ B)SIM; scan • C) SIM; SIM mode. When we do mode. SIM allows greater sensitivity
- Identify the detectors in gas chromatography that can be used for the detection of each type of analyte. More than one detector may be appropriate for a given analyte, and a given detector may be appropriate for more than one type of analyte. compounds ionized by UV radiation sulfur or nitrogen containing compounds halogenated compounds flame ionization Answer Bank mass spectrometer nitrogen and phosphorous containing compounds thermal conductivity electrolytic conductivity hydrocarbons electron capture thermionic photoionizationIf Jotaro Kujo measured the amount of current that passes through a sample to measure the amount of analyte in the sample, what kind of method did he use? Volumetric method Spectroscopic method Gravimetric method Electroanalytical method1) Titrant 5 mg H2O/ mL Resolution 2.5 µg H2O/step Detection limit is 125 µg H2O for a 5 g sample (= 25 ppm) 2) Titrant 2 mg H2O/ mL Resolution 1 µg H2O/step Detection limit is 50 µg H2O for a 5 g sample (= 10 ppm) You have a 10 g sample which is expected to contain 200 µg H2O. True or false? 1. Titrant 5mg/mL is the preferred system over 2. Titrant 2mg/mL for this sample. True False
- The paper used in chromatography is made of molecules with___parts A polar B nonpolarPART ONE: Preparation of FECNS* Solution Prepare the two solutions in table 1 by accurately measuring the required volumes of distilled water and CNS into two labeled test tubes. The absorbance of the solutions must be measured soon after adding the Fe" solution from a buret. TABLE 1 Fe 5 ml 5S mL Solution Distilled Water CNS 2 mL Total Volume 3 ml 2 ml 10 ml 3 mL 10 ml In this part of the experiment you are to explore what the above quote means. As a PRELIMINARY Exercise, formulate a hypothesis as to what would happen under each of the following circumstances: 1. 1ml of 0.0020 M CNS' solution is added to the unused portion of solution 1 in the test tube 2. One drop of 0.20 M CNS solution is added to the unused portion of solution 2 in the test tube.II. b) What is the difference between liquid-liquid, solid-liquid and solid-phase extraction? Complete the table below and sort the following examples in the correct column: Steeping tea, washing an organic phase (workup), brewing beer, chemical desalting of crude oil, activated carbon sugar decolorization. liquid-liquid solid-liquid solid-phase Phase that contains analyte before extraction? Phase that contains analyte after extraction? Example(s)
- Table 2: Absorbance Values of Standards and Unknowns. Sample Blank Standard Solution 1 Standard Solution 2 Standard Solution 3 Standard Solution 4 Standard Solution 5 Water Sample 1 Water Sample 2 Phosphate Concentration (in ppm) Y17 0 ppm 0.02 ppm 0.04 ppm 0.08 ppm 0.16 ppm 0.32 ppm Freeman Lake 0.001 0.325 0.292 0.413 0.315 0.039 0.054 0.049 Absorbance at 2= 690 nm Calculations: 1. Construct a phosphate standard curve in Excel by plotting concentration (in ppm) on your x-axis and Absorbance (unitless) on your y-axis for your known solutions. Label the axes on the graph and provide the curve with a title. Use a linear trendline to generate a best fit line to your data. Label the graph with the equation and the R" value. Insert your labeled graph in the space below. XTitration of an oxalate sample gave the following percentages: 15.07 % , 15.58 % , and 15.42 % . Calculate the average. Calculate the standard deviation.The amount of ascorbic acid in cashew juice of different brands was determined by two different methods, colorimetry and titrometry. The results obtained for the two methods for analyzing the different cashew juice are necessary in the following table. Sample Colorimetry (mg/100g) Titrometry (mg/100g) juice brand A 152,2 153,7 juice brand B 150,7 150,7 juice brand C 18,7 18,7 juice brand D 67,4 67,4 Can the two methods be used, indistinctly, to determine ascorbic acid in cashew juice, at a 95% confidence level? Explain.