In X-ray spectrometers, the specimen or the sample is placed after which of the following components? A) X-ray tube B. Monochromator Collmator D. Detector filter

Q: If a solution has a 1max of 500 nm, what is the likely color of the solution? red orange blue green…

A: Solution: We know that color of any compound appearing is the complement color of which is absorbed.…

Q: b) What is the difference between the MGS and EGS? Explain what is the main role of Trichlorsilane…

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

Q: extinction coefficient = ε, path length = b, concentration C A sample containing an unknown…

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Q: Why do polar solvents destroy the absorption band's fine spectral structures?

A: Polar solvents destroy the fine spectral structures in an absorption band.

Q: What does it mean when a substance has low molar absorptivity? The substance has low transmittance.…

A: Molar Absortivity means how strongly a chemical species absorbs light at particular wavelength that…

Q: Use the following atomic masses (in g/mol): Ca = 40.08; C = 12.01; O = 16; Na = 23; Cl = 35.45   1.)…

A: A question based on mole concept that is to be accomplished.

Q: Which form if EDTA is used in any analytical experiment? Why?

A: Ethylenediaminetetraacetic acid (EDTA) is used as a metal-chelating agent. It is a chemical that…

Q: 1. What is the difference between dye and pigment? 2. Why is it vital for a chromophore to be a part…

A: 2. Chromophore is that part of the dye which is responsible for its colour. This colour is made…

Q: Coprecipitation that involves foreign particles? a. Inclusion b. Mechanical entrapment c. Surface…

A: Co-precipitation :– The concurrent precipitation of more than one compound from an solution.…

Q: refractometer

A: In this question we have to explain the principle on how to determine the concentration of syrup…

Q: What was the purpose of the alumina column?

A: In chemistry, Column chromatography is a technique which is used to separate a single chemical…

Q: Copper was determined in a river water sample by atomic absorption spectrometry and the method of…

A: Given,The absorbance of sample, A1 = 0.500The absorbance of sample + blank = 1.020The concentration…

Q: What is IR active and IR inactive?

A: IR spectroscopy corresponds to the transition between the vibrational levels of a molecule.  It…

Q: In the Spectrophotometric determination of Iron experiment, the calibration curve is plotted as…

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Q: In spectrophotometry, there is       a linear relationship between the extinction coefficient and…

A: The absorption and emission of light or other electromagnetic radiation by substances is studied…

Q: In your job as a chemist for a regional analytical laboratory, you are expecting many samples that…

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Q: 68. This process is an example of O Liquid Chromatography O Atomic Absorption Spectrophotomer O Thin…

A: Liquid chromatography is used to identify and seperate each part of a solution. Atomic Absorbtion…

Q: Explain why is FAAS a good method of quantifying Ca in milk?

A: In milk, calcium is spreaded between caesin micelles and milk serum.

Q: Two samples were analyzed using a colormeter on a cellphone: one containing only distilled water,…

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Q: Calculate the concentration of this protein in the sample in (ng/mL).

A: We have toCalculate the concentration of this protein in the sample in (ng/mL).

Q: Select all of the situations which will NOT lead to errors when using Beer's law. Analyzing samples…

A: The amount of a substance that resides in a given volume of the solution is expressed as the…

Q: Write a detail note on fol soft ionization techniques:- a. Field Desorption (FD) b. Fast Atom…

A: In Mass Spectrometry, there are various ionisation techniques which are used. The two main divisions…

Q: what are advangtage and disadvantage of using an Atomic Force Microscopy and explain each

A: Atomic force microscopy is a technique by which we study the different type of surfaces like…

Q: A 10 μL aqueous sample containing 1 attogram of Rb+ was injected into a graphite furnace atomic…

A: Given : Volume of solution = 10 μL = 0.01 mL                                 (since 1 mL = 1000 μL )…

Q: Which of the following is/are characteristic of silica as stationary phase in chromatography? O It…

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Q: The hardness of water is analyzed using titration. A liter of water sample from tap water found to…

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Q: Titration of an oxalate sample gave the following percentages: 15.07 % , 15.58 % , and 15.42 % .…

A: The mean is calculated using the below formula,

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

A: We are authorised to solve only one question at a time. Please post rest of the questions…

Q: Multiple choice question : 1-Atomic absorption A- The sample passes to monochromator the to the…

A: Hey there! Please check out the answer. Correct answer : C

Q: Most iron (III) compounds are very weakly colored, and do not lend themselves well to visible…

A: In spectrometric analysis, we measure the intensity of color of the unknown compound with the help…

Q: Uses a lamp and a flame for determining the concentrations of metal ions in solutions. a. High…

A: Mass, IR and UV/VIS spectroscopy techniques are based on the observation of emission and absorbed…

Q: Why to use acid or base for the development of fluorescent carbon dots?

A: Carbon-Dots are a kind of zero-dimensional nanomaterials. They are environment friendly and possess…

Q: Write Ksp for Ca3 (PO4)2 salt ... a. [Ca2+]3 [PO4]² b. [Ca2+] [PO43-1² c. [Ca]³ [PO43-]? d. [Ca2+]²…

A: The compound given is Ca3(PO4)2.

Q: When using a calibration curve and beers law if one of your a diluted test solutions had an…

A: Beer- Lamberts law gives a linear relationship between concentration of the sample and its…

Q: explain why alumina containing zeolites possess chemically active surface

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Q: A calibration curve was prepared that yielded a linear fit of y = 277x with an R2 value of 0.912.…

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Q: Consider the Beer's Law plot shown below: When the absorbance is 0.55, what is the concentration of…

A: The calibration curve given is, Given absorbance = 0.55

Q: Question 9 Which of the following is not a part of conventional UV/Vis. spectrophotometer? A…

A: UV/Vista spectrophotometer is used in UV/Vista spectroscopy.

Q: What is the detection limit of GC-FID in terms of analyzing samples such as water with oil

A: The full form of GC-FID is Gas chromatography-Flame ionization detection. Gas Chromatography is one…

Q: All the following statements are TRUE about Beer-Lambert law, except: The percent transmission…

A: The statement, that is regarding Beer-Lambert law, which is incorrect has to be given.

Q: chemhelp7 The researcher determined the Pb content of water sample from a river suspected to be…

A: Plot the calibration curve first to get graph equation in excel.

Q: 8. Why are higher resolution monochromators found in ICP-OES spectrometers than in flame AAS…

A: Spectrometers are the instruments helpful in observing and analyzing the substance in the given…

Q: Most iron (III) compounds are very weakly colored, and do not lend themselves well to visible…

A: By complex formation absorbance will be increased

Q: Use the equation for your straight line fit (from the experiment) to determine the concentration of…

A: given : absorbance =0.295 lambdamax=1.00 cm

Q: More polar molecules move more slowly through silica than less polar molecules. Why is silica gel…

A: In methyl orange is polar since it contains the ionic part of the molecule (SO3-Na+). However, in…

Q: A 0,0138 gram sample of brass was dissolved in a approximately 1 ml of nitric acid and then diluted…

A: A numerical problem based on qualitative analysis, which is to be accomplished.

Q: 1. Colorimetric methods of analysis are based on having a reagent that changes as a function of the…

A: The correct option is (c)  Calorimetric analysis is based on the the principle of beer-lambert law.…

Q: Which of the following methods is mod suitable for the purification of new solid organic 37 compound…

A: Given Technique A. Evaporation B. fractional Distillation C. Steam Distillation D. Recrystallization…