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- Analysis of pure molecules either heterogenous mixture or analysis of pure molecules neither heterogenous mixture nor analysis of pure molecules heterogenous mixture1. From spinach, the chromatographic analysis will yield two major substances: (a) B-carotene (C40H56), which will separate from the spinach mixture to form a yellow band, and (b) chlorophyll A (CSSH72MGN4OS), which will separate from the mixture to form a green band. i. Describe the characteristics and draw structures of these molecules. ii. From the spectrophotometric analysis, what wavelength (Amax) would you expect ß-carotene (C40H56) to absorb? What wavelength would chlorophyll A (CssH72MgN4O5) absorb?What is single-point calibration? Provide an example.
- An exploration of any one application of Spectroscopy (Absorption or Emission), Mass Spectrometry (MS) - (ANY kind of mass spec) Pick one location/project/bit of research where the data is used and explore. Discuss on what is measured (what instrument) and why and how. You don't have to fully teach the instrument but spend a paragraph giving the very basics of what is measured and how. And discuss the application you discovered - just find a place the measurement is used and explain what they do - what they measure and when it tells them.One method for the quantitative determination of the concentration of constituents in a sample analyzed by gas chromatography is area normalization. Here, complete elution of all the sample constituents is necessary. The area of each peak is then measured and corrected for differences in detector response to the different eluates. This correction involves dividing the area by an empirically determined correction factor. The concentration of the analyte is found from the ratio of its corrected area to the total corrected area of all peaks. For a chromatogram containing three peaks, the relative areas were found to be 16.4, 45.2 and 30.2, in order of increasing retention time. Calculate the percentage of each compound if the relative detector responses were 0.60, 0.78 and 0.88, respectively.With reference to all the following methods of calibration (Isomation calibration method, external standards method, internal standards and standard addition calibration method), explain the difference between single-point calibration and multiple-point calibration.
- What is difference between SPE and DSPE?Here is the protocol for a UV-Vis spectrophotometer to detect water and chlorine-carbon. 1.Dissolve the water and chlorine-carbon compounds in a solvent, such as water. 2.Prepare a standard solution of known concentration that is similar to the sample being measured. 3.Calibrate the spectrophotometer using the standard solution. 4.Measure the absorbance of the sample using the spectrophotometer. 5.Calculate the concentration of the compounds in the sample using the calibration curve obtained from the standard solution. How is the spectrophotometer calibrated with standard solutions? When is the blank solution placed in the spectrophotmeter?One disadvantage of thin layer chromatography is that... it cannot be used for quantitative measurements. O it consumes large volumes of solvents O it cannot analyze volatile samples it cannot be used to analyze many samples simultaneously it requires a large amount of sample for analysis
- the spectra is of a drug either cannabinoid, opiate, MDMA etc, please explain the spectra and what drug could it be101 Chem101 M 10.04 pH and Acidity: Introductic x b Answered: Complete the balance X A app.101edu.co Question 16 of 35 Submit Complete the balanced molecular reaction for the following weak acid with a strong base: HC-Н,О-(aq) + NaOH(aq) - 4- O3- D2- D2+ 03+ 4+ 1 3 4 7 8 13 14 8 (s) (1) (g) |(aq) H2O H OH- Na Reset • x H2O Delete 2.Can someone help? I am not sure about the two Ieft blank. I get aldehydes and ketones mixed up.
