“SPORTS RULE THE MIND” (A paragraph condensation) The argument between a sports lover‚ and an academic supporter. 1) Sports cause a lot of kids to be absent from their classes. 2) 2) His tally averages 22 hours per week. 3) 3) The janitors services are disrupted due to sports. 4) 4) Lost school time + Practice time = 42 days per semester. 5) 5) Dollar costs in custodial‚ secretarial and travel expenses are revealed. 6) 6) He
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A SHORT INTRODUCTION TO TWO-PHASE FLOWS Condensation and boiling heat transfer Herv´ Lemonnier e DM2S/STMF/LIEFT‚ CEA/Grenoble‚ 38054 Grenoble Cedex 9 Ph. +33(0)4 38 78 45 40‚ herve.lemonnier@cea.fr herve.lemonnier.sci.free.fr/TPF/TPF.htm ECP‚ 2011-2012 HEAT TRANSFER MECHANISMS • Condensation heat transfer: – drop condensation – film condensation • Boiling heat transfer: – Pool boiling‚ natural convection‚ ´bullition en vase e – Convective boiling‚ forced convection‚ • Only for pure fluids. For
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33447 DROPWISE & FILMWISE CONDENSATION APPARATUS The equipment consists of a metallic container in which steam generation takes place. The lower portion houses suitable electric heater for steam generation. A special arrangement is provided for the container for filling the water. The glass cylinder houses two water cooled copper condensers‚ one of which is chromium plated to promote drop wise condensation and the other is in its natural state to give film wise condensation. A connection for pressure
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Cargo Handling Safety 1. Why cargo gear should be inspected visually before the start of cargo operation? All cargo handling gears should be inspected before the cargo operation is commenced to ensure that all gears are in good working condition in order to prevent any accident and/or damage to cargo‚ ship‚ and/or injuries and loss of human lives. 2. Why SWL of equipment should never be exceeded? Safe Working Load (SWL) is the allowable load of block‚ wires‚ ropes‚ derrick booms‚ crane jibs‚ hooks
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THE REFRIGERATION SYSTEM AN INTRODUCTION TO REFRIGERATION APPLICATION NOTE BASIC REFRIGERATION PRINCIPLES If you were to place a hot cup of coffee on a table and leave it for a while‚ the heat in the coffee would be transferred to the materials in contact with the coffee‚ i.e. the cup‚ the table and the surrounding air. As the heat is transferred‚ the coffee in time cools. Using the same principle‚ refrigeration works by removing heat from a product and transferring that heat to the outside air
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composition of ethanol was achieved. Introduction: Distillation is the ancient process of separating a liquid into its volatile components by vaporizing a liquid by heating‚ condensing the vapor by means of a cool condenser‚ and collecting the condensation thereafter. Distilling is used in many practical ways such as purifying contaminates out of water to obtain clean water for drinking‚ to produce a variety of alcoholic beverages like vodka or whiskey‚ refining oils such as the gasoline we put
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Aldol Condensation Formal Abstract: An aldol condensation reaction was performed on acetophenone using p-anisaldehyde and sodium hydroxide as a base. This produced trans-p-anisalacetophenone in the form of a fluffy yellow crystal. The reaction was performed in a test tube and sodium hydroxide was added drop by drop followed by recrystallization and vacuum filtration. In order to verify the presence of the ketone 2‚4-dinitrophenylhydrazone was synthesized and reacted with trans-p-anisalacetophenone
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procedure. Results and Analysis {Limiting reagent} Mass benzoin = 2.0050g (0.00945 mole) Mass sodium borohydride = 0.4059g (0.0107 mole) Mass compound A used to form compound B = 1.0647g Results Mass (g) moles Molecular formula Yield (%) Mp (pure) Compound A 1.7458 0.00815 C14H14O2 86.22 138-139 Compound C 0.4255 0.001988 C14H14O2 40.02 136-138 Spectral Analysis IR Absorption (cm-1) Assignment Benzoin 3411‚ 3374 OH 2961‚ 2903 C-H aromatic 2358 C-O
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Synthesis of Benzoin Date of Experiment: 1-26-15 Chelsea Price Lab Partner: Joey Simmons Abstract: In this experiment‚ benzoin was synthesized from benzaldehyde‚ using thiamine hydrochloric acid as a catalyst. The thiamine HCl was deprotonated by sodium hydroxide and acted as a nucleophile to attack the benzaldehyde. A water-cooled condenser was used to heat the solution at reflux. Vacuum filtration was used to wash and dry the product. The benzoin product was recrystallized
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the resin exuded from the bark of several species of Styrax trees. The fragrant resin smells like vanilla and is sometimes known as “gum benzoin”. It’s used to make incense and to slow fragrance release in perfumes. Benzoates are derived from benzoic acid. Today benzoic acid is made in the laboratory from other chemicals instead of being extracted from gum benzoin. Cinnamon contains benzoic acid. Source: AliciaC Benzoic Acid and Sodium Benzoate Pure benzoic acid is a white to colorless solid
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