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A: In a warm environment, which restorative wax is recommended for surface restoration?
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A: Analytical chemistry.
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A:
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Q: 2.1 Draw a vacuum filtration setup and discuss possible advantages and disadvantages thereof.
A: Vacuum filtration is a more convenient technique and used mostly now-a-days in every laboratory.
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A: Thin layer chromatography is a technique which is used for the separation of components of a…
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A:
Q: What could happen if you used ink to draw on your baseline and letters on the TLC plate?
A: Pencil is always used to mark chromatography paper.
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Q: which component in the HPLC, pushes the mobile phase through a column?
A: To determine: which component in the HPLC pushes the mobile phase through a column
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Q: Draw a vacuum filtration setup and discuss possible advantages and disadvantages thereof
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Q: What will be the appearance of a TLC plate if a solvent of too low polarity is used for the…
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A:
Q: Draw the main components that will be present in any HPLC and GC instrument respectively.
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A: GC and HPLC instrumentation can be given as follows
Q: Why is it important to avoid any scratch on the cuvette?
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Why is it important to handle the TLC plate in such a way that your fingers do not come in contact with the coated surface of the plate?
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- Estimate a diameter of a 2 denier circular crossection fiber made of Nylon 6 (density = 1.14 g/cm3). Select the closest from the list. O 1) 10 µ 2) 15 H 3) 20 µ 4) 40 HFill in the blanks: Silica ____ has a larger surface area than particle type ___The shorter distance that the solvent travels on the TLC plate results in a better separation of compounds. Group of answer choices True False
- Indicate if the viscosity of a polymer decreases with increases in (a) shear strain rate, (b) molecular weight, (c)temperature (d) pressure. How are weld-lines caused in injection mouldings and how do they affect the quality of the components?The chemical which reacts with HCHO to produce a harmless material called urotropin is ___. This can be used to neutralize a large spill of HCHO. cavity fluid ammonia paraformaldehyde bleachA supporting electrolyte is usually added to the analyte solution to minimize solution resistance.minimize solution conductivity.make the analyte less soluble in solution.increase the scan rate.
- Why plasticizers are added during the moulding of plastics ?Determine whether the first part of statement will INCREASE, DECREASE or HAVE NO EFFECT in the second part of the statement. 1.If there is an increase in amount of plasticizer in polycarbonate then the stiffness will _____. 2. If we substitute the Fe3+ (64 pm) in hematite ((-Fe2O3) by Zn2+ (73 pm), then the Interplanar distance will _______. 3. If there is an increase in plar groups then the degree of polymerization will ________.According to Riippi et al. (1998), briefly discuss the effects of increased compression force to the following tablet properties: Weight and thickness Crushing strength Friability Disintegration time Surface profiles (as seen on SEM photographs)