The technique of ___________ produces a uniqueabsorption spectrum for an organic explosive.

Q: IR Sepectrometer organic

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Q: Screen. 7 With increasing polarity of solvent the

A: UV-Vis Spectroscopy can be defined as a technique that is used for measuring amount of light…

Q: ny grams are

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Q: What is Low-excess-air firing (LEA)?

A: Given: Low-excess-air firing (LEA)

Q: CO, Draw Rings More Erase Select Draw Rings More Erase F

A: According to the Lewis theory every atom has tendency to complete it's octet by sharing electron…

Q: It is never necessary to take more than one composite sample per field. True Or False

A: Composite soil sampling is the traditional soil sampling method. To make a composite sample we mix…

Q: me, 旭乳

A: this is an example of photochemical reaction, the ring formation take place to that side where the…

Q: Label and do

A: Use stoichiometric calculations to find the no. Of moles of carbon dioxide formed.

Q: Calculate the Absorbance from concentration for each trial of 0,10, 30, 40, 50 % (with yellow LED)…

A: The Absorbance from concentration for each trial of 0,10, 30, 40, 50 % has to be calculated.

Q: if air can degrade a column and cause TC detector filaments to burn out, why do we use an air peak?

A: Interpretation -  If air can degrade a column and cause TC detector filaments to burn out, why do we…

Q: Why is it not necessary to test the supernatant from both trial samples for the excess reactant is…

A: In step 9, BaCl2 is added to test tube 1, and Na3PO4 is added to test tube 2. Precipitation occurs…

Q: Plz do it fast If this brine had a resistivity of 0.012 02-m at 68 F and the log measured…

A: The formula which is used to calculate the water saturation is shown below: Ir=ρωρs=Sω-n Here, Ir is…

Q: Calculate the Rf value for a spot in a TLC experiment if the solvent moved 14.5 cm and the spot…

A:

Q: How resolution in HPLC analysis can be improved?

A: HPLC i.e  high-performance liquid chromatography is an analytical method which is being used to…

Q: Fill in the blanks: is applied when TLC will be used to isolate compounds. It uses a plate.

A: Thin layer chromatography is a technique used to isolate non volatile mixtures.

Q: Calculate the RF value for a spot in a TLC experiment if the solvent move 13.5 cm and the spot move…

A:

Q: The following conditions may not cause tailing EXCEPT a. Volatile solvent b.Uncovered chamber…

A: TLC is one of the basic technique to get a preliminary idea about the compound synthesized in the…

Q: a pigment in the thin layer chromatography traveled beyond or farther than the solvent front.…

A: As a pigment in the thin layer chromatography traveled beyond or farther the solvent front therefore…

Q: 5. Using the diagram answer the questions below: Increasing time Sample appled to top of column…

A: To answer question related to chromatography:

Q: What is the application of chromatography (HPLC) and it's mechanism ?

A: Answer.

Q: What error is introduced into the determination of an Rf value if the top is left off the developing…

A: In chromatographic technique, the components of a mixture are separated by using a developing…

Q: Peak Retention Time (minutes) Area 1.201 136501204 acetone 2.011 1253056 toluene ortho-product…

A:

Q: It is used with samples in MALDI system to help ionization of the sample and then irradiated with…

A: The objective of the question is to select one of the given options based on the given statement…

Q: Liquid extraction What can you do if you don't know which layer is which in an extraction procedure?…

A: Extraction is a fundamental technique used to isolate one compound from a mixture. A liquid/liquid…

Q: In HPLC, why is purging or initialization being done before analysis of samples, explain.

A: ✓basically following two reasons for using purging and initialization during HPLC sample preparation…

Q: A HPLC column had a sample (0.10ml) loaded onto it. The detector volume showed 0.15 mL. From this…

A: Before starting any troubleshooting, whether it is related to instruments or columns, it isessential…

Q: a) Solid phase extraction E

A: In this question, we have to tell about which pre concentration method would be right for tomato…

Q: Select Draw Rings More Erase Br H2C-CH3 Br2 H3C C.

A: Alkenes react with Br2 to undergo electrophilic addition reaction.

Q: At the completion of the experiment, a student measures the solvent front to be 55 mm from the…

A:

Q: what will produce a smaller Rf value if the solvent and paper are both changed?

A: Increasing the polarity of solvent will result in increase in Rf value as the compound in even for…

Q: Test Tube Add First and note appearance Then add... 1 mL of 0.01 M KMNO4 plus 6 drops of 6 M H2SO,…

A: The given reactants are K2Cr2O7 and H2SO4.

Q: improve

A: We know that resolution is a measure of how well two Elution peak can be differentiated in…

Q: What is the result of applying too much sample to the TLC plate? Select one: Some of the sample…

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Q: Calculate the Rf value for a spot in a TLC experiment if the solvent moved 13.5 cm and the spot…

A:

Q: Put all steps (below) of a TLC analysis in a correct order. Write the two main visualization methods…

A: TLC analysis in correct order is as follows.

Q: Question 19 In AFM, what is the consequence of low scanning time? limited magnification thermal…

A: AFM refers to Atomic Force Microscopy or Scanning force Microscopy.  It is a high resolution type of…

Q: If peak A has a width of 10 min and peak B has a width of 16 mins, what is the column resolution?

A: Given :-  Width of peak A = WA = 10 min Width of peak B = WB = 16 min  Column resolution = ?…

Q: A technician injects a sample twice back to back into a C18 General Purpose HP column. Sample…

A: One extra peak in first injection may be due to the presence of contamination from septum, injection…

Q: What is the Rf of the compound if the compound distance is 2.59 cm and the solvent front distance is…

A: Given that, Distance travelled by solute= 2.59 cm Distance travelled by solvent= 5.81 cm Then ,…

Q: Select Rings More Erase Draw HNO3 + H,0 H2SO4

A:

Q: Calculate the Rf value of a spot that travels 5.7 cm, with a solvent front that travels 13 cm.

A: Rf is a retardation factor that is defined as the distance traveled by a substance divided by the…

Q: how does the intermolecular force of attraction lead to stain removal? state reference

A: Intermolecular forces are the type of forces operating in between the atoms or ions of different…

Q: How column is developed and solvent selection is done in HPLC?

A: HPLC stands for High-pressure liquid chromatography or high-performance liquid chromatography.HPLC…

Q: Rf of spot A in the TLC plate below is: Solvent front A 10 cm OB 8 cm 6 cm 2 cm Origin Select one: O…

A: The Rf value of a component depends on the distance travelled by the component and the distance…

Q: ect the true statement(S) of the re s more sensitive than a UV detec does not respond to many…

A: The Refractive Index Detector in HPLC does not respond to many solutes. It only detects those with…

Q: What is a blank and what is its purpose? Distinguish method blank, reagent blank, and field blank.

A:

Q: What is the line at the top of a TLC called? Select one: The origin O The end line O The solvent…

A: TLC is commonly known as thin - layer chromatography, in this method non- volatile mixture are…

Q: Should you increase the diameter or length of the chromatography colum for increasing throughput?

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Q: observation and inference hexane is subjected into lucas test and Metallic sodium test

A: Sodium Metal Test: Drop a piece of sodium metal in the liquid to be tested (before adding sodium…