10. which of the followings is the universal detector used in IHPLC: a) Fluorescence b) IR c) FID d) ECD e) RI

Q: Single standard addition method was.16 applied for spectrophotometric analysis of Na+ in a 25 mL…

A: Let us suppose the amount of Na in unknown water sample be x ppm. If we are added the solution 0.500…

Q: The obtained plot in the detector of HPLC is called, O peak O bell O triangle area

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Q: Drinking water with negligible lead content was fortified with 2.28 µg Pb(II)/L. Triplicate…

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Q: PART B. Spectrophotometrilc Determination of the Copper Content of a Penny Mass of penny:3.138 Date…

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Q: A student completed Test Solution 1: 2.5 mL of 2.00×10−32.00×10−3 M Fe(NO3)3Fe(NO3)3 mixed with 0.5…

A: The volume of 2.00×10-3 M Fe(NO3)3 used is 2.5 mL. The volume of 2.00×10-3 M NaSCN used is 0.5 mL.…

Q: A) Given the following set of data, plot the chromatogram (absorbance versus volume of eluate). Vol…

A: To plot the chromatogram, the volume of eluate is taken as x axis and absorbance as y axis The graph…

Q: A chemist prepared a reagent blank and 6 Fe standards with the following concentrations: 20, 30, 40,…

A: Here we would be required to find the calibration curve for absorption

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A: The value of LOD and LOQ can be determined using respective formulas.

Q: In thin-layer chromatography, what is the Rf value of a compound if the solute travels 2.9 cm and…

A: Retention factor: The ratio of distance traveled by the substance to the solvent is known as the…

Q: To determine the instrument detection limit of Pb2+ ions, a student made 10 blank solutions and…

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Q: A toluene solution (1.50 mg / L) shows an absorbance of 0.30 in a cuvette with a 0.025 mm optical…

A: The given data contains, Absorbance of toluene = 0.30 Pathlength of cuvette = 0.025 mm.…

Q: 15.5 mg of Anthracene was dissolved in 200 mL of cyclohexane to prepare the stock solution. 10 mL of…

A: Molar mass of anthracene = 178.23 g/mol Mass of anthracene = 15.5 mg or 0.0155 g Volume = 200 mL or…

Q: Mass spectral measurements were made on 10 replicate low concentration Ni-EDTA samples: 171.7,…

A: TRANSPORT-PROPERTY AND MASS SPECTRAL MEASUREMENTSIN THE PLASMA EXHAUST PLUME OF AHALL-EFFECT SPACE…

Q: Which of the following is NOT a possible cause of error when taking a spectrophotometer reading? An…

A: Spectrophotometer is used to measure  absorption if light or the amount of chemicals in a solution.…

Q: All of the following are classified as an instrumental method of analysis EXCEPT: O A.…

A: Answer: Different methods are used In chemical analysis and they can be classified into two…

Q: Why Rf value is important in Chromatography?  Please shortly answer at your own words. Answer should…

A: Rf  stand for the Retention factor . Its value is  equal to the distance  travelled by component…

Q: A chemist prepared a reagent blank and 6 Fe standards with the following concentrations: 20, 30, 40,…

A:

Q: A student researcher measured the cadmium (C*) content in a standard reference material (SRM) using…

A: Given: Mean (X) = 3.127 ppb Standard deviation (s) = 0.006 ppb  the number of observations (n) = 7…

Q: You are developing a procedure for determining traces of copper materials using a wet digestion…

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Q: Question 7 What variations are tolerated by an analytical method is described by the method's Select…

A: The correct option is:

Q: Which of the following statements concerning calibration curves are true? 1. A plot of signal…

A: Calibration curves are used to understand instrumental response to an analyte and to predict the…

Q: The detecton limits reported for Al with ICP-AES and GF-AAS are 2 ppb and 5 picograms, respectivly.…

A: Given:Al with ICP-AES = 2 ppb = 2 µg/L = 2×10-6 g/L.Mass of Al with GF-AAS = 5 picogram = 5×10-12…

Q: One definition of analytical method limit of quantitation, LOD, in a GLP laboratory is a signal that…

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Q: Derivatiztion of sample is carried out to: a) Improve analyte peak shape analyte resolution b)…

A: Derivatization of sample is carried out to, (a) Improve analyte peak shape (b) Increase the detector…

Q: 1) Study the chromatograph (below) of a mixture of Compounds A and B, run on the GCs in the teaching…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: 8. Derivatiztion of sample is carried out to: a) Improve analyte peak shape analyte resolution b)…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: The HPLC chromatogram below was collected using a reverse-phase column with a length of 10 cm.…

A: Resolution is an important HPLC performance indicator usually assessed by how quickly and how…

Q: A graphite furnace atomic absorption spectrophotometer (AAS) was used to determine the arsenic (As)…

A: Concentration of As Absorbance 2 0.17 4 0.28 6 0.48 8 0.53 10 0.72

Q: Consider the chromatogram that t3=20 sec, calculate for its number of theoretical plates: " 12 Ty…

A: Here we are required to find the number of theoretical plates

Q: In a chromatographic experiment, a mix of 3 compounds are separated. The following data are…

A: The mass percentage of compound C is needed to be calculated from the given chromatographic data.

Q: Which of the following must be present for an analysis to be successful? I) High selectivity II) Low…

A: Analysis of any chemical species largely dependent on high selectivity,  low detection limit (LOD)…

Q: An atomic absorption method for the determination of the amount of iron present in used jet engine…

A: Solutions-  a standard deviation s = 3.1 µg Fe/mL.  calculate the 95 and 99% confidence intervals…

Q: 1- Calculate the standard deviation of this group. 2- Calculate the Coefficient of variation.…

A: Standard Deviation and Coefficient of variation can be formulated as :

Q: Does CI aroms have an isotopic pattern of 1:1 relative intensity of M and M+2. True or False?

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Q: Low Concentrations of Ni-EDTA near the detection limit have the following counts in a mass spectral…

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Q: A chemist prepared a reagent blank and 6 Fe standards with the following concentrations: 20, 30, 40,…

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Q: ti n d ĉ Table 2. Concentration and Spectrophotometric data for Brilliant prepared in trials # 1 -…

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Q: High performance liquid chromatography (HPLC) can be used to : a. identify the various pigments from…

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Q: TLC technique is classified as: Select one: O a. Qualitative analysis technique O b. Complicated…

A: Chromatography is the method of separation of different components present in a compound.

Q: You are developing a procedure for determining traces of copper in biological materials using a wet…

A: To calculate the 95% confidence level for the above sample.   Confidence interval = X ±ZσnX = mean…

Q: The basic spectrophotometer is composed of four components. Which component listed below is NOT one…

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: A student completed Test Solution 1: 2.5 mL of 2.00×10−32.00×10−3 M Fe(NO3)3Fe(NO3)3 mixed with 0.5…

A: Given- Fe(NO3)3 = 2.5 mL of 2.00×10−3 M NaSCN = 0.5 mL of 2.00×10−3 M HNO3 = 2.0 mL of 0.1 M Total…

Q: 6. Mass spectrometry and UV/Vis absorbance spectroscopy can both be used as detectors for liquid…

A: Note: Since you have posted multiple independent questions in the same request, we will solve the…

Q: An atomic absorption method for the determination of the amount of iron present in used jet engine…

A: The confidence interval CI is given by the following equation:  …… (1) Here, z is the value for the…

Q: Differentiate the following compounds using FTIR spectrophotometer.Explain the principle of FTIR…

A: