of the specialized underlying structures of these life-forms. In order for us to appreciate these special adaptation‚ we first need to know how a typical plant or an animal cell organelle behaves in different water and solute concentrations. In this lab‚ we will determine the effects of hypertonic‚ isotonic and hypotonic solutions on plant and animal cells. In general when an animals cell’s placed in hypertonic solution it shrivels; a plant cell on the other hand undergoes plasmolysis. When an animal
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Title: Esterification Objective: To synthesis acetylsalicylic acid by esterification. Introduction: A pleasant‚ often fruity‚ odor is characteristic of some of the simpler esters. Ethyl butyrate smells similar to pineapples‚ the odor of n-propyl acetate is reminiscent of pears and isopentyl acetate has a strong banana fragrance. Esters are derivatives of the carboxylic acids and contain the following functional group: The synthesis of an ester can be accomplished in one of several ways. An esterification
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Exp 23 B Synthesis of t-Pentyl Chloride 11-8-12 Purpose: The sysnthesis of t-Pentyl Chloride from alcohol. Procedure: Preparation of t-Pentyl Chloride. In a 125-mL separatory funnel‚ place 10.0 mL of t-pentyl alcohol (2-methyl-2-butanol‚ MW _ 88.2‚ d _ 0.805 g/mL) and 25 mL of concentrated hydrochloric acid (d _ 1.18 g/mL). Do not stopper the funnel. Gently swirl the mixture in the separatory funnel for about 1 minute. After this period of swirling‚ stopper the separatory funnel and
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Name: ______________________________________ Date: ________________________ Student Exploration: Dehydration Synthesis Vocabulary: carbohydrate‚ chemical formula‚ dehydration synthesis‚ disaccharide‚ glucose‚ hydrolysis‚ monosaccharide‚ polysaccharide‚ valence Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. If you exercise on a hot day‚ you need to worry about dehydration. In this context‚ what do you think dehydration means? When you are exercising in the heat you
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will broaden range &may increase melting point Lab Questions 1. Define the following A. Melting point B. Intermolecular forces C. Hydrogen bonding 2. Arrange the following IMF according to there strength Dipole-Dipole interaction forces‚ Hydrogen bonding‚ Van der Waals forces 3. How does the atmospheric pressure affect the melting point? 4. What is the purpose of determining the melting point in this lab? 5. Why is this method not used for finding the melting
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Synthesis of Salicylic Acid from Wintergreen Oil Objective – Preparation of salicylic acid (organic synthesis) from methyl salicylate utilizing previously used procedure from the nineteenth century. The final product will then be evaluated in comparison to salicylic acid made from benzene. Discussion – In this synthesis‚ methyl salicylate is the starting material or precursor and salicylic acid is the target product. It is the major constituent of wintergreen oil. The difference in structures
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Case study Freud carried out a number of case studies‚ finding out from clients what was causing them problems or holding them back. They may have symptoms (e.g. phobia) that arose from the unconscious. E.g. Little Hans case study. Activation-synthesis theory of dreaming – Hobson and McCarley 1977 1. Biological theory of dreaming Dreams are random messages in the brain being interpreted to make a story. Messages are activated randomly‚ and then synthesized into a story. There is a dream state
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Journal of Management http://jom.sagepub.com/ Causes and Effects of Employee Downsizing: A Review and Synthesis Deepak K. Datta‚ James P. Guthrie‚ Dynah Basuil and Alankrita Pandey Journal of Management 2010 36: 281 DOI: 10.1177/0149206309346735 The online version of this article can be found at: http://jom.sagepub.com/content/36/1/281 Published by: http://www.sagepublications.com On behalf of: Southern Management Association Additional services and information for Journal of Management
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Toxicology Lab 1. In this investigation‚ a wide range of concentrations of Sodium Chloride (NaCl) solution were created and the effects that they had on radish seeds were tested. This ultimately created a doseresponse experiment in which it was detectable whether or not radish seeds were a reliable bioassay for the toxicity of NaCl. The goal of this experiment was to determine a correlation between toxicity and seed germination/radicle
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Synthesis of Aspirin and Oil of Wintergreen Janelle Alyssa P. Prudente De La Salle University-Dasmariñas Dasmariñas City‚ Cavite‚ Philippines ABSTRACT In this experiment‚ acetylsalicylic acid commonly known as aspirin and methyl salicylate‚ commonly known as oil of wintergreen‚ was synthesized from salicylic acid. This study will show that it is possible to show two very different organic compounds from the same common starting material. For the synthesis of aspirin‚ salicylic acid
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