Name: __________________________ Date: _____________ 1.|Complete the table and use the result to estimate the limit. x|||||||f(x)|||||||| A)|–0.076923| B)|0.423077| C)|0.298077| D)|0.548077| E)|–0.451923| 2.|Determine the following limit. (Hint: Use the graph of the function.)| A)|6| B)|5| C)|1| D)|4| E)|does not exist| 3.|A graph of is shown and a c-value is given. For this problem‚ use the graph to find .| A)|0| B)|–10| C)|–5| D)|15| E)|does not exist| 4.|Use
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Chromatographic conditions Shimadzu VP-ODS column is (250 mm x 4.6 mm i.d.‚ 5 µm particle size)‚ Shimadzu‚ Kyoto‚ Japan. The mobile phase consisted of a mixture of 0.3% TEA‚ 10% n-propanol in a solution of 0.1 M SDS adjusted to pH 2.8 using 0.02 M orthophosphoric acid. It was pumped at a flow rate of 1 mL min-1. The column was kept at ambient temperature and the wavelength of the detector was at 225 nm. Standard solutions Stock solutions of LVD‚ CBD and ETC containing to 1.0 mg mL-1 were prepared
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Analysis of Ethanol in Moonshine | Using the GC-MS | Jennifer Greene | ------------------------------------------------- 4 May 2012 ------------------------------------------------- 4 May 2012 Introduction: In this experiment gas chromatography is applied to separate the water-ethanol mixture. This method is often used in the determination of alcohol in blood or urine. One obvious application is when law enforcement agencies need to determine whether or not someone is inebriated. In
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Anionic Exchange Ion Chromatography to Detect the Anions Concentrations in the water Samples Narendra Boppana‚ Nasser Ali‚ Martin Chavez‚ Sear Introduction: Ion Exchange Chromatography is a process where the ionic exchange occurs in between the stationary phase and the sample in the mobile phase‚ by using this ionic exchange phenomenon it is easy to separate the compounds. Ionic exchange depends on the electrical properties
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Title: Liquid Chromatography Author: Gloria Contreras Lab Partner: Jose Montanez Instructor: Teresa Potter Date Work Performed: January 13‚ 2015 Date Submitted: January 20‚ 2015 Abstract: In this lab‚ liquid chromatography is used to separate the Red 40 and Blue 1 dyes inside of grape flavored Kool-Aid. It was determined that the 5% isopropanol will remove the Red 40 dye from the stationary phase. The 28% isopropanol will remove the Blue 1 dye from the stationary phase. The more
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unknown compound. In this experiment‚ chromatography and titration were performed to identify the unknown amino acid. Within experimental error‚ the results were consistent with the reference literature cited in this report. Experimental Thin Layer Chromatography The amino acid standards used in this experiment were Alanine‚ Glycine‚ Serine‚ and Histidine. These standards and the unknown were separated by performing a method of chromatography. Thin layer chromatography (TLC) was performed by using a mobile
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EXPERIMENT 4 ANALYSIS OF HYDROCARBON IN COMMON FUELS BY SOLID-PHASE MICROEXTRACTION (SPME) AND GAS CHROMATOGRAPHY-MASS SPECTROMETRY (GC-MS) Abstract In the analysis the solid-phase microextraction (SPME) and capillary gas chromatography/mass spectrometry (GC/MS) was developed for the identification of volatile compounds (hydrocarbon) in fuel. The samples was used is (kerosene‚ diesel‚ thinner and petrol) and one unknown. After the analyte was extracted by SPME in 20min‚ it directly injected
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Chromatography of Food Dye Chem 180-DL3 Abstract: The goal of this experiment was to use different dyes to determine the Rf value. Chromatography is done to determine the presence of a mixture in a substance. In this experiment different dyes were used such as McCormick food coloring‚ M&M’s‚ Kool-Aid‚ and the dyes that came with the lab kit. Experiment and Observation: In this experiment a 50mL beaker was filled with luke warm water and a pinch of salt water was dissolved in it
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Objectives: To use the process of chromatography to separate plant pigments. To compare the plant pigments found in spinach and red leaf lettuce leaves. Hypotheses: I believe the spinach leaf in the acetone will have a higher pigment of chlorophyll a and the red leaf lettuce will have a higher pigment of anthocyanin. I believe the spinach leaf in distilled water will have a higher pigment of chlorophyll a and the red leaf lettuce will have a higher pigment of anthocyanin. Discussion Questions:
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able to experimentally analyze and isolate amino acids by separation techniques. One such method of separation is thin layer chromatography (TLC). In this method‚ a silica coated aluminum plate is spotted with the solution being separated‚ and the plate is placed in a developing jar containing a small amount of solvent. With time‚ the solvent
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