Nicole Vigliotti Partner: Camille Dupiton Lab #1 Purification of a Solid: Crystallization and Melting Point Section: A61 Laboratory Exercise #1 Purification of a Solid: Crystallization and Melting Point Introduction In this lab exercise‚ we will be learning experimental techniques using glassware and other apparatuses. In order to successfully complete this lab‚ we will use techniques 1.0‚ 1.1‚1.2‚2.0‚2.1‚2.2‚ and 2.3 that are described in the Lab Manuel.
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quantitatively. The isolated phytoconstituents were subjected to disc diffusion assay to ascertain their antibacterial effect. Results Hot water and acetone seed extracts showed considerably good antibacterial activity against all the bacteria except Klebsiella pneumoniae and one strain of Pseudomonas aeruginosa. Minimum inhibitory concentration for aqueous and acetone seed extracts ranged from 20–80 mg/ml and 5–15 mg/ml respectively. Viable cell count studies revealed the bactericidal nature of the seed extracts
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CHM 2210 – Fall 2012 – Test 4 Name (print):_________________________ 1. What is the IUPAC name for the following compound? a) b) c) d) 3-methyl-1-penten-4-yne 3-methyl-1-buten-4-yne 4-methyl-4-penten-1-yne 4-methyl-4-buten-1-yne 2. What is the major organic product obtained from the following reaction? 2 equiv Br2 a) b) c) d) 2‚3-dibromobutane 2‚2‚3‚3-tetrabromobutane 2‚3-dibromobutene 2‚2-dibromobutane 3. What is the best choice of reagent(s) to perform the following transformation
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ammonia gas as precipitant. Cerium was used as a simulator for plutonium and the other actinides with a +4 valency. After co-precipitation the aqueous (Th1ÀxCex)(OH)y Æ nH2O cakes had been dried at 110 °C‚ these powders were separately milled in acetone‚ carbon tetrachloride‚ n-dodecane‚ isopropanol and water before and/or after calcination at different temperatures (300–600 °C). DTA-TG‚ XRD‚ TEM and BET analyses were performed to characterize the produced powders. Characterization results revealed
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1 SN2 Reaction‚ Ionic Liquid (Group – hood) Background Reading Solomons and Fryhle Chapter 6 (Substitution/Elimination Reactions) Techniques: Weights and Measures‚ Reflux‚ Liquid-Liquid Extraction‚ Distillation. Introduction The SN2 reaction is a bimolecular nucleophilic substitution reaction where the nucleophile (a molecule with a free pair of electrons) reacts with an alkyl halide and replaces the halogen (for more details see Solomons and Fryle‚ Chapter 6). The nucleophile approaches
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Solvent: Distilled water‚ Ethanol‚ and Acetone. Solute: Acetanilide. Result: Data and Report Sheet. 1.1 Choosing a suitable solvent. Solvents | solubility | Appearances and quantity of the crystal at room temperature | | Room temperature | Hot temperature | | Distilled water | insoluble | soluble | Crystal like white needle | Ethanol | good | - | No crystal | Acetone | good | - | No crystal |
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the paper. Beta carotene is non-polar so it travels the highest distance‚ followed by chlorophyll a. Chlorophyll b is the most polar; therefore‚ it travels the shortest distance. The separated pigments on the chromatography paper can be eluted in acetone and absorbance spectrum is determined using spectrophotometer. Spectrophotometer produces a graph of the absorbance spectrum which shows the wavelengths (in nm) that are absorbed by the pigment and that are reflected. The reflected wavelength of chlorophylls
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Differential Staining Cynthia Alonzo‚ M.S. Version 42-0242-00-01 Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information
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Biologically Important Molecules Carbohydrates‚ Proteins Lipids And Nucleic Acids Professor Anthony Depass Biology 1 9/25/14 Introduction: By completing lab exercise 6 : Biologically Important Molecules‚ we are able to perform tests such as the Benedicts Test for Reducing Sugars‚ Iodine Test‚ Biuret Test‚ Sudan IV Test‚ and lastly the Grease-Spot Test that detect the presence of biologically important carbohydrates‚ protein lipids and nucleic acids. Most known compounds in living organism
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Evaluation of the phytochemical composition and the anti-proliferative potential of seed extract of Dicerocaryum senecioides on Jurkat T cell lines By Humbulani Ronald Tshilongamulenzhe A Dissertation submitted to the Faculty of Science and Agriculture‚ Department of Biochemistry‚ Microbiology and Biotechnology‚ School of Molecular and Life Sciences in accordance with the requirements of the University of Limpopo for honours for the degree Bachelor of Science in Biochemistry UNIVERSITY OF LIMPOPO
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