When would you use flame ionisation detectors in chromatographic analysis?  (a) analysis of hydrocarbons at trace levels (b) Analysis of organic and inorganic compounds at normal concentration levels (c) Analysis of samples that you want to preserve (d) Analysis of hydrocarbons at trace levels and analysis of samples that do not need to be preserved (e) None of the other answers   Pick one and why...

Q: In molecular exclusion (size exclusion) chromatography, molecules have the the longest retention…

A: Molecular exclusion chromatography is base on size of molecules. It is a separation technique that…

Q: Assume for the following situations that Beer’s law remains linear. For (a) and (b), indicate…

A: Beer’s law is given by,        A=ε×c×lWhere,        A=absorbance of the solution        ε=…

Q: When preparing the chromatography paper, which of the following are important points to consider?…

A: Chromatography is a laboratory method employed to separate and analyze mixtures of substances,…

Q: A student performs this and records the following data from the complted chromatogram. the solvent…

A: The  Rf value is the ratio of distance travelled by the sample (b) to the distance travelled by the…

Q: Fill in each blank with the correct choice: When comparing two chromatographic methods, the better…

A: The resolution in a chromatographic method depends on two factors such as plate number and plate…

Q: The height of three peaks; A, B, and C obtained in a gas chromatogram are 20.6 mm, 17.5 mm and 40.6…

A: A numerical problem based on gas chromatography, which is to be accomplished.

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: Chemistry Question

A: Polyatomic ions have more than one type of element present in them. The constituent ions are made up…

Q: Briefly discuss flame ionization detectors in gas chromatography under the following headings: a)…

A: Flame ionization detectors are most sensitive gas chromatographic detectors. It measures analytes in…

Q: Describe chromatography analysis, the two essential phases used in paper chromatography and provide…

A: Chromatography is an analytical technique used for the identification, separation and purification…

Q: light used in gas chromatography- mass spectrometry? If so, how is it used?

A: Yes light can be used in GC-MS. The explanation is as follows:

Q: What is in a fractionating column?     Silica gel     Collected fractions     Glass or plastic…

A: Using fundamental of fraction distillation process and hardware.

Q: Can thin-layer chromatography (TLC) be used to differentiate between two closely related compounds…

A: Introduction: Thin-layer chromatography (TLC) is a powerful separation technique used to distinguish…

Q: _is a technique which is used to separate a single chemical 3. compound from a mixture dissolved in…

A: Chromatography can be defined as the technique used for separating mixtures with the help of a…

Q: 0.1120 g of a solid sample containing copper was dissolved by acid and transferred to a 250.00 mL…

A: Here, by atomic absorption spectrophotometry the amount of copper (Cu) has been measured We know…

Q: A solution containing Cu2+ is analyzed by atomic absorption and gives an absorbance of 0.01000…

A:

Q: 5. (1) (ii) Ibuprofen (206.3 g/mol) absorbs at 255 nm and shows a molar absorptivity of 3010…

A:

Q: The principle of affinity chromatography is based on: a) Charge interactions b) Size exclusion c)…

A: Affinity chromatography relies on the specific and reversible interaction between a target molecule…

Q: What is the role of helium gas in gas chromatography? O stationary phase O It does not play a role…

A:

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

A: Answer.

Q: How is light and energy used in gas chromatography- mass spectrometry (GC-MS)?

A: Gas chromatography- mass spectrometry (GC-MS) It is a hyphenated technique Here 2 analytical…