Cuvette maintenance and cleaning is crucial for the success of spectroscopic analysis. Which is NOT advisable? a. inspection of residues b. using lens paper in wiping c. utilization of ultrasonic cleaners d. periodic checking for cracks e. maintaining a logbook of usage

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Q: 1.4 List three factors upon which the integrity of an aqueous trace metals standard is dependent.…

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A: Purified water does not contain any impurity. There are various methods for purification of water…

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Q: In X-ray spectrometers, the specimen or the sample is placed after which of the following…

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Q: You are provided with standard stock solutions containing 1000ppm each of Cu, Mn, K, Na and Ca. You…

A: So, we are provided with 1000 ppm each of Cu, Mn, K, Na and Ca.

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A: Melting point analysis helps in analyzing the purity of the compound.

Q: What are flame tests used to identify?

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Q: Mobile phase is: Select one: O a. Silica gel O b. Liquid phase O c. Solid phase ilica gel must not b

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Q: Spinach chromatography lab: provide a short description of the following processes: a) Spinach…

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A: Given problem, A colored band shows an excessive amount of tailing as it passes through the column.

Q: Why is catalytic dewaxing not considered as a separation process?

A: Since Catalytic dewaxing involves breaking and making bonds, so it is usually referred to as a…

Q: Why is it important to pre-treat the solid before leaching?

A: It is important to pre-treat the solid before leaching because of Agglomeration ( this stage…

Q: What was the purpose of the alumina column?

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Q: Why must all solutions tested be placed in the same cuvette for the absorbance reading?

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Q: from one of our neigboring countries are heavily contaminated with pesticides. Upon analysis, some…

A: WORKING OF SOLID PHASE MICROEXTRACTION :

Q: spotting paper chromatography samples above the solvent level ______________________________________…

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Q: GUIDE QUESTIONS 1. What type of precipitate is BaSO4? 2. Why is a filter paper preferred over a…

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Q: As distillation method is used to seperate a homogenous mixture, which kind of mixtures…

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

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Q: A melting "point" analysis is a bit of a misnomer: how so? What do we measure when doing such an…

A: By the term melting point, we mean that it is a fixed point of temperature where a substance or…

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

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Q: A 0.32 g soil sample was digested and diluted to 481-mL. The diluted sample was analyzed for Zn by…

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Q: The fluid exiting a chromatographic column is called the eluent eluate analyte solvent Question 22…

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Q: What happen to the glowing wood splint when it is inserted inside the test tube?

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Q: In atomic spectroscopic techniques, flames and furnaces are commonly used to atomize the samples.…

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Q: a) What is capillary electrophoresis used for? b) Describe electrophoresis. c) Describe…

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