pigments would be present in the extracted plant leaf according to the Rf values. PROCEDURE/APPARATUS: The equipments used were a 18 x 150 mm test tube with stopper‚ graduated cylinders‚ Erlenmeyer flask‚ mortar and pestle‚ metric ruler‚ tall jar‚ acetone‚ tiny test tube‚ small brown bottle‚ petroleum ether‚ plant leaf‚ dried parsley flakes‚ water‚ glass petri dish‚ stapler‚ sand‚ spatula‚ pipette‚ capillary tube‚ Whatman filter paper‚ a 50 ml chromatography solvent‚ and goggles (to be worn at all
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“Star Apple Leaves as Paste” An Investigatory Project Presented to the Class of Mr. Marjim Dela Cruz Biological Science NS2 Presented By Nathaniel Abaya Sanchez September 12‚ 2014 “Star Apple Leaves as Paste” A. Purpose It makes my study important cause it can be used in many ways‚ such as pasting works‚ decorating‚ painting & other things. Also its not expensive but it can give us low price. Like other paste or glue‚ it also useful in our economic.. B. Procedure First‚ you should
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Carbohydrates‚ Proteins‚ lipids‚ and nucleic Acid Lab Exercise 6 Date: 9/17/12 Bio 102-11 Purpose the purpose of this experiment was to perform test to detect the presence of carbohydrates‚ proteins‚ lipids‚ and nucleic acids. Explain the importance of a positive and a negative control in biochemical test. Use biochemical test to identify an unknown compound. Background Most organic compounds in living organisms are carbohydrates‚ proteins‚ lipids‚ and nucleic acids they are called macromolecules
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864 17-3 Rate of a Chemical Reaction 868 18-1 Equilibrium Expressions 871 18-2 Measuring Ka for Acetic Acid 875 19-1 Blueprint Paper 878 19-2 Reduction of Manganese in Permanganate Ion 881 21-1 Acid Catalyzed Iodination of Acetone 884 21-2 Casein Glue 888 21-3 Polymers and Toy Balls 891 LABORATORY PROGRAM Copyright © by Holt‚ Rinehart and Winston. All rights reserved. 785 Back Safety in the Chemistry Laboratory Any chemical can be dangerous
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Physical Chemistry CHM2330 Experiment F- Raoult ’s Law Experiment By: Sanah Assaad Student Number: 5267864 Partner: Jihad Arafa T.A: Didier University of Ottawa March 25‚ 2010 Objective: The purpose of this experiment is to study the total vapour pressure of ideal or non-ideal mixtures of two volatile liquids as a function of chemical composition. Introduction: For ideal mixtures of volatile liquids the vapour pressure of any given mixture may be obtained by applying Raoult
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Questions 1. For solutes that are dissolved because of intermolecular attractions with the solvent‚ state the intermolecular attractions involved. Intermolecular Attractions F There are dipole-dipole attractions and hydrogen bonding between polar acetone and polar water. J There are dipole-dipole attractions and hydrogen bonding between ethanol and water. There are also dipole-dipole attractions between ethanol and diethyl ether. L There are hydrogen bonding‚ dipole-induced dipole forces‚ and
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A Civil Action (movie) Dead child worth least of all Schlichtmann received a call from Anne Anderson because her son died 12 deaths from leukemia >> 8 are children Water from two city wells are contaminated by TCE Case was kicked from firm to firm It’s a hard case because it is most likely unproven Apology from “who?” >> the defendant is sure to have some professionals >> case might not be winnable Beatrice and WR Grace are the perpetrators Lawsuits begin with the complaint Will Cheeseman:
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Provide and Maintain Nail enhancements Task 1A Positioning of the nail technician and the client during the service It is important for the nail technician as well as the client to be properly positioned throughout the service so that the treatment is as effective as possible. Both the technician and the client should be of the same height throughout the treatment. Ensure the workstation is of relevant height and use height adjustable chairs with a good back support. This is to prevent over
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and Testube | 83.47g | -- | Flask‚ Testube‚ and Filtrate (initial) | 90.54g | -- | Filtrate (initial) | 7.07g | -- | Erlenmeyer Flask | 74.14g | -- | Erlenmeyer flask and Filtrate (final) | 74.41g | -- | Filtrate (final) | 0.26g | -- | Acetone | -- | 1.00mL | * These results show all the measurements that were taken from everything used in order to determine the analysis of the trimyristin extracted which is shown below. * Analysis: Weight of Trimyristin | 0.1g | Melting
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does to the people around you. Transition: Some people who smoke don’t know what’s in them. Body I. Cigarettes have many harmful chemicals in them. A.I am going to name a couple of these chemicals. 1. Cigarettes have acetone in them. a. Acetone is found in nail polish remover. 2. They also have carbon monoxide in them. a. Carbon monoxide is released from the exhaust of the car. 3. There is also butane in cigarettes.
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