also the formation of a precipitate. Materiel needed: Test tubes Rack of test tubes Plastic droppers Beakers Procedure: We prepare 7 beakers of 7 different solutions (that we mark from 1→ 7). We put separately around 50 ml of: HCl NaOH Na2CO3 K2CrO4 CaCl2 CuSO4 Unknown substance Using plastic droppers we mix 10 drops of one solution with 10 drops of another solution in a test tube‚ to get all in all 20 different test tubes. We then note the observation for each test tube.
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World Academy of Science‚ Engineering and Technology 72 2010 Preparation and Some Mechanical Properties of Composite Materials Made from Sawdust‚ Cassava Starch and Natural Rubber Latex Apusraporn Prompunjai*‚ Waranyou Sridach The performance and stability of sawdust-reinforced composite materials depends on the development of coherent interfacial bonding between sawdust and matrix. The general components of sawdust are cellulose‚ hemicellulose‚ lignin‚ pectin‚ waxes‚ and water-soluble substances
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_____________________________________________________________________________________FACULTY OF APPLIED SCIENCE BACHELOR OF SCIENCE (HONS) BIOLOGY BIOLOGY DEPARTMENT BIO560 ASB3Cb EXPERIMENT 1: FUNDAMENTAL PHYSIOLOGICAL PRINCIPLES (ACID & BASES) STUDENT’S NAME MOHAMAD SYAMIL BIN MD. JANI 2013618492 LECTURER’S NAME: MDM DATE OF EXPERIMENT: 1 OCTOBER 2014 DATE OF SUBMIT: 8 OCTOBER 2013 INTRODUCTION: Physiology is a quantitative science that works on measuring changes
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bottom of flask Hair + HNO3 Turned hair slightly yellow Hair + bleach Partially dissolved Egg white + HNO3 Solidified the egg Egg white + NaOH Solidified the egg Egg white + bleach Completely dissolved Polystyrene + acetone Completely dissolved Aluminum foil + NaOH Clumped together to form a hard substance Egg yolk + HNO3 Solidified the egg Egg yolk + NaOH Solidified the egg Egg yolk + bleach Completely dissolved 3. What is the correct safety attire for this lab course? (6 pts) Students
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others‚ some will have more physical changes. I think they will all have at least some chemical and physical changes. ! ! Procedure: ! 1. Half-fill one well of a 24 - well plate with 6 M HCl and half-fill a second well of the 24-well plate with 6 M NaOH. Suck up the chemicals into their labeled pipets for later use. ! 2. Perform the following steps on each of substances being tested. Complete all the tests of one substance and record your observations before going o to the next. ! 3. Place 4 small
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The University of Lethbridge Department of Chemistry & Biochemistry Chemistry 2740 Laboratory Experiment 2 A KINETIC STUDY OF THE BASE CATALYZED CLEAVAGE OF DIACETONE ALCOHOL USING A DILATOMETER The decomposition of diacetone alcohol into two molecules of acetone is catalyzed by hydroxide ions and is an example of an aldol condensation in reverse. O OH OHO 2CH3-C-CH3 CH3-C-CH2-C(CH3)2 The rate of decomposition is first-order with respect to the concentrations of both diacetone alcohol
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Chemistry Lab Report Determining Best Calorimeter Dylan Mendonca 12-B Background: Calorimetry is the science of measuring the heat of chemical reactions or physical changes. Calorimetry is performed with a calorimeter. A calorimeter can be any container from a cup to a Calorimeters need to be well insulated as calorimetry relies on the fact that temperature change only occurs within the solution and that no heat escapes to the surroundings. That is why it is important that calorimeters are well
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Project 17: Soaps and Detergents Stephanie Futrell Kelsey Duncan Tom Bunch Antwyone Clayborne Chemistry 1020 Laboratory‚ Section 007 Instructor: Fan Yang September 23‚ 2014 Our signatures indicate that this document represents our own work. Excluding shared data‚ the information‚ thoughts and ideas are my own‚ except as indicated in the references. Goals There was another oil spill that covered local birds in oil. The environmental group stepped in to help make their own soap
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lab table. We monitored the containers for a period of sixty minutes. After the hour passed we gathered our containers and added drops of sodium hydroxide necessary to equal the carbonic acid produced by CO2. We counted the amount of drops used of NaOH and stirred it till the colorless solution turned into a light pink solution for each container and recorded our
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column 1 row G; two drops of KI were combined with two drops of Pb(NO3)2. The results were observed and recorded. In column 1 row H; two drops of NaOH was combined with two drops of Phenolphthalein. The results were observed and recorded. In column 3 row A; two drops of HCl was combined with two drops of Phenolphthalein. In column 3 row B; two drops of NaOH was combined with two drops of AgNH3. The results were observed and recorded. In column 3 row C; two drops of AgNO3 was combined with two drops
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