the loss of HCl via nucleophilic substitution. Cellulose triacetate was generated by mixing cotton balls and acetic anhydride with acidic condition under heating. Materials: Styrene‚ 1 M NaOH solution‚ CaCl2(s)‚ xylene‚ t-butyl peroxybenzoate‚ methanol‚ 5% aqueous solution of 1‚ 6-hexanediamine‚ NaOH(s)‚ 5% sebacoyl chloride in hexane‚ glacial acetic acid‚ concentrated H2SO4‚ cotton balls‚ acetic anhydride‚ CH2Cl2 Procedure: For the synthesis of polystyrene‚ 10 ml styrene and 20 ml of 1 M NaOH
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density of the following liquids and solids. Data/Observation: Part A Sample | Distilled Water (g) | Methanol (g) | Glycerol (g) | Mass of empty cylinder | 41.1 g | 40.4 g | 41.1 g | Mass of cylinder + liquid | 51.2 g | 48.2 g | 53.8 g | Mass of liquid | 10.1 g | 7.8 g | 12.7 g | Calculations: Density of liquid = Mass/Volume = g/mL Distilled Water = 10.1g/10mL = 1.01 g/mL Methanol = 7.8g/10mL = 0.793 g/mL Glycerol = 12.7g/10mL = 1.27g/mL Data Observation: Part B Sample
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Purpose: I will identify an unknown liquid by obtaining an average density & boiling point for my liquid and comparing them with the known densities & boiling points of liquids in the CRC handbook of Chemistry & Physics. I will perform these experiments using three different measuring tools (graduated cylinder‚ burette & pipette) to evaluate the precision of each one. Results: Density 1‚ 2 & 3 calculated by using graduated cylinder to obtain volume. Density 4‚ 5 & 6 calculated by using volumetric
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A Small Scale Approach to Organic Laboratory Techniques pp. 6-‐9 Report: Part A 1) Results in table form Solvent: Solvent: Solvent: methanol Solid Organic Molecules water hexane (intermediate (highly polar) (nonpolar) polarity) Benzophenone Soluble after O Partially Completely 20 seconds soluble
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VOL. 6‚ NO. 9‚ SEPTEMBER 2011 ARPN Journal of Agricultural and Biological Science ©2006-2011 Asian Research Publishing Network (ARPN). All rights reserved. ISSN 1990-6145 www.arpnjournals.com PROMISING ANTIFUNGAL EFFECT OF SOME FOLKLORIC MEDICINAL PLANTS COLLECTED FROM EL- HAMMAM HABITAT‚ EGYPT AGAINST DANGEROUS PATHOGENIC AND TOXINOGENIC FUNGI Department of Bioprocess Development‚ Genetic Engineering and Biotechnology Research Institute‚ Mubarak City for Scientific Research and Applied Technology
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permeability of the cell membrane is disrupted causing cellular contents to leak out. When cells are cut‚ the cell membranes are mechanically ruptured. High temperature disrupts the structure of proteins and certain chemicals such as acetone and methanol dissolve the phospholipids‚ leading to damage of the membrane and therefore leads to increased permeability. Beetroot is the material used in this experiment to demonstrate the effects of high temperature and chemicals on the permeability of the
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This could be improved by adding more methanol to the mixture before isolation. The mixture could also stay in the water bath for longer than 45 minutes to allow an adequate time for the tartaric salt to form. An extra 30ml of methanol was added to this experiment to get the tartaric salt to form and if more methanol was added‚ a higher percentage yield might have been obtained. The literature value for the melting point of
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This usually means the cell is dead. In this experiment‚ you will test the effect of three different alcohols (methanol‚ ethanol‚ and 1-propanol) on membranes. Ethanol is found in alcoholic beverages. Methanol‚ sometimes referred to as wood alcohol‚ can cause blindness and death. Propanol is fatal if consumed.
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No flames should be allowed in the laboratory when any of these are in use. For the experiment I am going to use clamp a tile up at an angle and run different alcohols down it to investigate their velocity’s. The alcohols im going to test are methanol‚ ethanol‚ propanol‚ butanol‚ pentanol‚ hexanol‚ heptanol‚ octanol. Equipment: White tile- to release the liquid on and then time the distance it takes. Stopwatch- to time
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3.1. Biochemical analysis of plant Due to the presence of bioactive compounds‚ medicinal plants have special properties of treatment of various chronic diseases. Lonicera quinquelocularis is used medicinally in the treatment of different diseases as “alternative medicine”. Due to the medicinal uses of the plant‚ it is very important to explore the biochemical composition of the plant. 3.1.1. Plant Collection Plant of Lonicera quinquelocularis was collected from the area Kakki of district Bannu‚ Khyber
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