sodium hydroxide and filtrated dichloromethane separated into two distinct layers before being transferred into two separate containers. Hydrochloric acid then had to be added to the aqueous layer of sodium hydroxide and aspirin‚ and then separated by vacuum filtration to form another dried substance. The unknown from the solution of dichloromethane and the unknown were isolated by aspiration‚ in which the unknown turned into a more
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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 by dissolving with a H2O/95% ethanol (2:1‚ v/v) solution and heated to reflux. Vacuum filtration was used to wash and dry the product. Introduction/Background: Introduction: Discussion of the mechanism of the performed reaction; discussion
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HISTORY OF COMPUTER THE PRE-MECHANICAL AGE: 3000 B.C. – 1450 A.D. 1. Writing and Alphabets – Communication First development of signs corresponding to spoken sounds‚ instead of pictures‚ to express words. Around 2000 B.C.‚ Phoenicians created symbols that expressed single syllables and consonants (the first true alphabet) The Greeks later adopted the Phoenician alphabet and added vowels; the Romans gave the letters Latin names to create the alphabet we use today. 2. Paper
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Once the second 100 mL beaker reached 80°C and this was determined based on the glass thermometer. This heated solution was then poured immediately into the vacuum filtration system. The vacuum filtration system was set-up and ran identical to the experiment listed above. 10 mL of the 80°C saturated calcium hydroxide solution was measured using a 10 mL graduated cylinder. The 10 mL of the 80°C saturated calcium hydroxide solution
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In Haruki Murakami’s Town of Cats‚ the protagonist‚ Tengo‚ embarks upon a journey to visit his father at a sanatorium. Upon the long train ride to visit his father‚ Tengo recalls the unorthodox childhood faced alongside his father with the absence of his mother; Tengo despises his father and blames him for the life he had and when he reaches the sanatorium‚ he has an altercation with his father‚ reads him a story and his father leaves him with a metaphorical statement about his childhood and future
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The pros and cons of entering a market by Judith A. Chevalier Introductory economics textbooks gene rally tell us to expect new entrants into an industry whenever the incumbent companies are earning profits greater than their cost of capital. Furthermore‚ we are told that entry will occur until profits net of the cost of capital are driven to zero. Obviously‚ this view of the world is too simplistic. We can think of many examples of markets with no regulatory barriers to entry in which incumbent
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Polytechnic University of the Philippines College of Science Department of Food Technology MOISTURE DETERMINATION (Experiment no. 1) Bea Dessa T. Co Maybelle Tolete Ian Francia Glyceryl Pangan BSFT 3-1D FOTE ///????? Food Analysis Prof. Kennedy Bongon Introduction Moisture content is one of the most commonly measured properties of food materials. It is important to food scientists for a number of different reasons: Legal and Labeling Requirements. There are legal limits to
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Blaise Pascal was born at Clermont on June 19‚ 1623 as the third of four children and the only son to Étienne Pascal. Blaise grew up without a mother‚ who died when he was only three years old. His father had dissident educational views and decided to educate his son himself‚ however‚ Étienne decided that Blaise was not to study mathematics before the age of fifteen. Therefore‚ he removed all mathematic texts from their house. Although he was told not to study mathematics‚ Blaise became curious
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GCE ‘O’ Level October/November 2009 Suggested Solutions Physics (5058 /01) # Ans 1 version 1.1 Workings/Remarks C End correction = 0.2cm Actual length of object X = 1.1 + 0.2 = 1.3cm 2 D Force‚ Acceleration‚ Velocity and Displacement are vectors. Work‚ Time and Mass are scalars. 3 D Gradient of speed-time graph = acceleration Changing gradient (curve) = non uniform acceleration Constant gradient (straight line) = uniform acceleration 4 C … 9 dots
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Agent program: implementation of agent function 5 Agents and environments The agent function maps from percept histories to actions: [f: P* A] The agent program runs on the physical architecture to produce f agent = architecture + program Vacuum-cleaner world Percepts: location and contents e g [A contents‚ e.g.‚ [A‚ Dirty] Actions: Left‚ Right‚ Suck‚ NoOp Rational agents Tabulation of agent functions Describes the agent Infinite !( for most agents) unless bound on percept sequence
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