below 100 degrees Fahrenheit. At normal room temperature‚ flammable liquids are a much greater fire hazard than combustible liquids. Flammables include lacquer thinner‚ turpentine‚ acetone‚ ether‚ alcohol‚ gasoline‚ toluene and shellac. For example‚ ethyl ether (a common solvent) has a flash point (FP) of –49 deg. F and acetone has a FP of 0 deg. F. Combustibles: These liquids have vapors which burn when heated above 100 deg. F. Combustibles include fuel oil‚ kerosene‚ mineral oil and paints. Flammable
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Chemistry 11 Santa Monica College Determination of Molecular Mass via the Dumas Method Objectives: • To determine the molecular mass of an unknown volatile liquid using the Dumas method and the ideal gas law. Background: In the early 19th century‚ Jean-Baptiste Dumas‚ a distinguished French chemist‚ created a relatively simple method for determining the molecular mass of a volatile substance. In this experiment we will use a modified version of his technique to determine the molecular
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Running head: Plastination Plastination Have you ever wondered how medical students get their knowledge on how they understand the human anatomy? I would believe in two ways. Books and Plastination. Books are a good reference that just shows pictures. Plastination would be the way to go. Plastination is a technique or a process used in anatomy to preserve bodies or body parts. It was first developed by Gunther Von Hagens in 1977. In November 1979 Gunther applied for
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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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Solubility and Functional Groups _______________________________________________________ You will recall from general chemistry that a solution has two components: the solvent‚ which is the substance present in greater amount‚ and the solute‚ which is dissolved in the solvent. Solubility is defined as the mass (in grams) of solute dissolved in 100 g of solute at saturation. Molar solubility is defined as the amount (in moles) of solute per liter of saturated solution. The solubility of one compound
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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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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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