What are megabore open tubular columns?

Q: Why is a filter paper preferred over a sintered glass filter

A: Filtration is a method used to distinguish solids from liquids or gases, using a filter medium that…

Q: d) In a typical HPLC column, 150 atm of pressure is required to push the mobile phase through the…

A: In this question, we have to find out the correct answer of given problem by the help of the concept…

Q: Student A did not see any spots on her TLC plate after visualization under iodine vapor. Which of…

A: The solution is given below -

Q: Would it be reasonable to store the standardized KMnO4 solution in a screw- cap bottle, if the cap…

A: Answer - According to the question - Given - KMnO4 is not a primary standard and is standardized…

Q: Mention one disadvantage of a capillary column as compared to a packed column

A: Please find your solution below : Capillary and packed columns are the two types of columns that are…

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

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

Q: Which one below is not one of the reasons for adding inorganic additives to organic matrix in…

A: They combine the advantages of the inorganic material (ex: rigidity, thermal stability) and the…

Q: Which of the following will cause an instrumental deviation in Beers Law? I. stray light II.…

A: Answer  Which of the following will cause an instrumental deviation in…

Q: a) Give three examples of applications where a solid lubricant would be preferable to a liquid…

A: the suitable candidate can be an engineer- Solid lubricant have advantages over liquid lubricants…

Q: We collected a clastic muscovite grain from the shale at sample K. The 40Ar/40K ratio is 0.65. What…

A: Given that : 40Ar / 40K = 0.65 The half life of 40K is 1.248 x 109 years

Q: High L/G ratios result in high operating costs of SO2 scrubbing. Why?

A: Generally, incinerators or large furnace and fossil-fuel power plants consist of SO2 scrubbing…

Q: The osmosis rate in these set-ups will slow down over time. Why?

A: Osmosis is the process of diffusion (movement of particles or molecules) of water across a…

Q: How is matrix selected in soft ionization? Give three examples.

A: Soft ionization is a type of ionization where a laser strikes a matrix of small molecules convert…

Q: What are the advantages and disadvantages of liquid-liquid extraction method?

A: Principal of liquid-liquid extraction method :

Q: This is the laboratory apparatus used for liquid-liquid extraction. Florence flask Volumetric flask…

A: For liquid liquid extraction is extraction of a particular compund from a solution with the help of…

Q: Explain what the liquid-liquid extraction technique consists of

A: Liquid–liquid extraction  also known as solvent extraction and partitioning.

Q: Can acetic acid be used as the mobile phase in  kool aid chromatography over isopropyl alcohol?…

A: Kool aid chromatography involves separation of red and blue dyes present in the Kool aid. The mobile…

Q: A 4.6 mm X 25-cm column that contains 5 um packing L7. The value 5 um represents; O a. length of the…

A: Dimension of the column, 4.6 mm x 25 cm

Q: why did you not need to accurately weigh out ki used in the standard and unknown analysis for…

A: In iodometric analysis of copper , generally KI is used because of following reasons (a)It is…

Q: Why is splitless injection used with purge and trap sample preparation?

A: The collection of all of the analyte from the unknown and to inject whole of the analyte into the…

Q: What are the advantages of Ultra-Performance Liquid Chromatography over High-performance liquid…

A: Both ultra performance liquid chromatography and high-performance liquid chromatography are good…

Q: List the advantages and any disadvantages of SFE compared to liquid-liquid extractions.

A: Advantages of SFE(super critical fluid extraction) over liquid-liquid extraction Speedy process…

Q: Write the advantages and disadvantages of Liquid chromatography compared with Gas chromatography.

A: Liquid chromatography (LC) and gas chromatography (GC) are analytical techniques for separating…

Q: Explain how solvent trapping and cold trapping work in splitless injection.

A: In Gas chromatography both split and splitless injection takes place. Split injection is used when…

Q: The function of the catalyst or catalyst is to prepare a surface on which the reactants are adsorbed…

A: We know that any substance that increases the rate of a reaction without itself being consumed is…

Q: Standard Tubes Volume of 0.1 Hydroxamate standard Tubes Optical Density (OD) Concentration 0.061…

A: Interpretation: To write the conclusion of the result given.

Q: If 250 mL of a 1:800 (v/v) solution were diluted to 1000 mL, what should be the ratio strength? The…

A:

Q: Describe the injection moulding process and distinguish between the injection moulding of TP and TS…

A: Injection moulding process is a method in which plastic materials are injected and are heated or…

Q: Point out TWO (2) strategies to increase selectivity in solid phase extractions.

A: A question based on analytical separations that is to be accomplished.

Q: Distinguish between interstitial defect and metal excess defect.

A: Interstitial defect metal excess defect This defect arises due to the occupation of some atoms in…

Q: A device to understand how iron behaves at high temperatures we want to design. This device (with 1%…

A: The volume of the unit cell of the iron before transforming is: VHMK = (a0)3 = (0.2863 nm)3 =…

Q: Explain the difference between wall-coated, support-coated, and porous-layer open tubular columns…

A: In wall coated columns the stationary liquid phase rests on capillary column which in turn consists…

Q: Why is a filter paper preferred over a sintered glass filter?

A: Filtered paper is made up of fiber and there are numerous holes (obviously of microscopic size) in…

Q: describe different type of degasser in HPLC system, and why degassing is important in the middle of…

A: Degasser is  very useful in HPLC .the main use of degasser in HPLC are  hellium sparging, sonication…

Q: Choose the appropriate techniques for degassing the mobile phase of HPLC. I. Ultrasonic II. Boiling…

A:

Q: What is the advantages, disadvantages and improvements of the Ultra high pressure liquid…

A: A question based on analytical separation that is to be accomplished.

Q: what are the characteristics of non-stick utensils and safety ness of PFTE materials

A: Characteristic properties of teflon: Tetra fluoro ethane is called as teflon.

Q: I) Choose the Correct Answer from the Multiple-Choice List (10) 1. Which of the following is not a…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: Determination of melting point can also be done by heating melting point capillary to the…

A: The thiele tube melting point apparatus uses thermometer, a suitable liquid, thiele’s tube, burner…

Q: Carbon nanotubes can be produced by ..method * chemical vapor deposition Sol-Gel physical vapor…

A:

Q: The following data apply to a 1g sample of a granular powder Volume of the solid alone = 1 cm3/2g…

A: Given: Volume of the solid alone = volume of grain = 1 cm3/2g Volume of intraparticle pores = pore…

Q: Why are stemless funnels preffered for hot filtirations?

A: We should use stemless funnels during hot filtration's.

Q: Compare the column material of GC and LC in terms of the “functional groups” taking place on the…

A: In GC there are two type of coloumn.packed coloumn And capillary Coloumn. In gas liquid…

Q: what is the difference between linear voltammetry, cyclic voltammetry and differential anodic…

A: Voltammetry is an electroanalytical technique where the information about an analyte is obtained by…

Q: In a GC experiment, a 30.00 m long fused silica capillary column produced 150,000 theoretical…

A: Calculate the plate height for the given problem which contains number of plates, length and height…

Q: How is matrix selected in soft ionization? Give examples.

A: In mass spectrometry soft ionization techniques are used to observe and analyse mainly the molecular…

Q: Indicate the order of elution of the following compounds from a normal-phase packed HPLC column a.…

A: Several compounds mixed in any particular solution mainly separated by utilizing the technique…