Give the general steps in the use of a spectrophotometer.

Q: What factor allows molecules to be separated by chromatography?

A: Chromatography is a method which is used to separate, identify and purify the components of a…

Q: Determine the molar concentration of food dye in the sample

A: We are given absorbance of analyzed sample to be 0.349 we have to find molar concentration

Q: The absorbance of a cationic iron(II) sample solution was measured in a spectrophotometer, but the…

A: Given that: the initial volume of sample = 100.0 μL diluted volume = 2 mL +100.0 μL  concentration…

Q: Using the data below, please create a calibration graph and determine the concentration of the…

A:

Q: Describe what is chromatography?

A: Introduction: There are various methods to separate the mixtures like distillation, physical and…

Q: Convert 9200 dpm per in^2 to Bq/100cm^2

A: given 9200 dpm/inch2

Q: chromatography

A: chromatography is a process in which the mixture is separated.  In this process we dissolve the…

Q: what is chromatography? Explain different types of chromatography and explain how to seperate…

A: Chromatography is a laboratory technique. It is use for the separation of the components or solutes…

Q: Name three common uses of High Performance Liquid Chromatography (HPLC) in the laboratory.

A:

Q: what is spectrophotometry? how is it related to Beer's Law?

A: Spectrophotometry is a part of electromagnetic spectroscopy worried about the quantitative…

Q: Why chromatography is an important tool for analysis of organic compounds?

A: Chromatography is the most useful technique for identification or separation of different compounds…

Q: Distinguish between the terms elution and eluent.

A: ELUTION: In analytical and organic chemistry, elution is the process of extracting one material from…

Q: Identify the following compounds from its molecular formula and its IR and 1H NMR spectra:

A: The functional groups present in the molecules are determined using IR spectroscopy and 1H NMR…

Q: Which technique separates components of amixture based on the size of its particles? A. filtration…

A: The technique which separates components of mixture based on particle size has to be given.

Q: A series of standards were analyzed which gave the following results SOLUTION % Transmittance  0 mL…

A: Beer-Lambert Law: The absorbance (A) is proportional to the concentration (c) of the solution and…

Q: 1. Describe the operation of spectrophotometer.

A:

Q: Determine the missing values. Express in 3 SF If the number is too big/small, Express the following…

A:

Q: Can paper chromatography be used to separate and identify very volatile substances? Why? Please…

A: TLC means “Thin Layer Chromatography”. This experiment is done on Wattman paper. If the molecule has…

Q: If the SI expression of 1.2 mg has a Power of 10 expression of 1.2 x 10^-3 g, then the SI expression…

A: The significant figures of a number written in positional notation are digits that carry meaningful…

Q: Identify the following compounds from its molecular formula and its IR and 1H NMR spectra:

A: Given,

Q: What are the differences between systematic and random errors and how do they effect accuracy and…

A: As per the Bartleby guidelines, an expert is allowed to answer one question at a time. Please repost…

Q: _is a technique which is used to separate a single chemical 3. compound from a mixture dissolved in…

A: Chromatography can be defined as the technique used for separating mixtures with the help of a…

Q: 625 nm, which can be used for the spectrophotometric determination of ammonia. ocr -OH • NH,…

A: Soln

Q: In three sentences, describe the principle of chromatography.

A:

Q: The following are applications for High Performance Liquid Chromatography, Except: Amplification…

A: Answer = EXCEPT (Amplification)

Q: What precautions should you take in handling a cuvet and placing it in the spectrophotometer?

A: Interpretation: The precautions taken in handling a cuvet and placing it in the spectrophotometer…

Q: a] An analyst would like to analyze the concentration of Mg2+ in a solution. He needs a calibration…

A: A question based on absorption that is to be accomplished.

Q: MİCRONS 5.5 2.5 100 26 27 28 2,9 3 3.5 4,5 11 12 13 90 70 50 40 30 20 1773 cm 10 3800 300 3400 3200…

A:

Q: In analytical chemistry, when and why do we do representative sampling?

A: Representative sample is defined as the small portion of the overall sample to determine the…

Q: Julie has been asked to measure the concentration of a sample solution using a spectrophotometer.…

A: On dilution, the no of moles does not change. As no of moles = Molarity × Volume Thus, (Molarity ×…

Q: As1...With the aid of a well labelled diagram illustrate how you would use poloragraphy analytical…

A:

Q: Principles of Chromatography

A: Definition :

Q: Which one is the most common method used for the purification of liquid mixtures? Filtration…

A: Different methods are used purification of compounds.

Q: Explain why the concentration of zinc cannot be determined directly using a spectrophotometer.

A: The atomic no of zimnc is 30. It contain many free electrons

Q: 25 nm, which çan be used for the spectrophotometric determination of ammonia. OCF 2 OH + NH3…

A: Solution -

Q: What are the main components of a spectrophotometer? Choose all that applies. radiation source…

A:

Q: What compounds present in a sample that can cause error in the analysis and alter desired results?…

A: Interpretation - We have to tell that due to which  compounds present in a sample that can cause…

Q: Define , describe, or illustrate the following: a. HETP b. Capacity factor c.. Selectivity…

A: The HETP is defined as a column length adequate to bring the solute in the mobile phase emitted from…

Q: 1. From spinach, the chromatographic analysis will yield two major substances: (a) B-carotene…

A: (i). Characteristics of beta-carotene: β-carotene is the molecule that gives carrots, sweet…

Q: 5. What would be the effect of the following errors in chromatographic work? a. The solvent level in…

A:

Q: The TLC and mp data contradict one another with regards to purity. True False

A:

Q: Explain temperature programming for gas chromatography and what its benefits.

A: Temperature programming is used to run a large fraction of all gas chromatography. In this the…

Q: On what principle is chromatography based?

A: The mixture of the various compounds can be separated by several separation techniques. In one of…

Q: What are prominent applications of High Performance Liquid Chromatography?

A: High performance liquid chromatography (HPLC) is a technique used in column chromatography that are…

Q: Which of the following is not a way of expressing data reliability:   Statistical Tests   Sampling…

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

Q: Relative Intensity 100- 08 20 10 MS2014-05101CM 20 30 60 SO

A: Mass spectrometry is mainly used for the identification of molecular weight which is denoted as M+.…

Q: attempt, she realizes that, to make the measurement, she must first dilute the sample solution.…

A: Solution- Final concentration =5.5X10-5m Final volume =250 ml =250X 10-3 l{since ml =10-3l}…