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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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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TPA are solids. DMT has a melting point of 140°C (284°F)‚ while TPA sublimes (goes directly from the solid phase to the gaseous phase). Both processes first produce the intermediate bis-(2-hydroxyethyl)-terephthalate (BHET) monomer and either methanol (DMT process) or water (TPA
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alcohols‚ primary‚ secondary and tertiary. The alcohols that will be used here will only be part of the primary and secondary group. The 5 alcohols will be Methanol‚ Ethanol. Propan-2-ol‚ Butan-1-ol and Pentan-1-ol . In this experiment we are going to test how alcohol evaporates.
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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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Explain how the chemical compounds carotene‚ retinol‚ and rhodopsin are each involved in vision. Vitamin A is responsible for good vision and eye health. It allows the surface of the eye to protect itself from bacteria and viruses. The rate in which your peripheral vision is lost will decrease if you take Vitamin A every day. If you have a deficiency from Vitamin A‚ your cornea to turn dry and cloud up the eye‚ which could even lead to blindness. Vitamin A can come in the form of retinol (active
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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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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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