EXPERIMENT NO 1. MATERIALS Sofdriks (coke) Dropper Vinegar Milk (yakult) Litmus paper Beer Ampalaya fruit Distilled water Calamasi PROCEDURE: 1. Prepare the materials that needed in experiment. 2. Using dropper‚ get a little amount of coke‚ vinegar‚ milk‚ beer‚ and distilled water then drop to red and blue litmus paper. Record the result. 3. Squeeze the
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Isolation of yeast RNA Methods The experiment was first started through mixing of 3.0 g dry yeast‚ 5.0 ml of 1% NaOH and 25.0 ml distilled water in 100 ml beaker. The resulting mixture was heated in a boiling water bath for 15 minutes while being stirred. The suspension was strained using cheesecloth and the obtained filtrate was obtained and collected in the beaker. This was then centrifuged at maximum speed for about 10-15 minutes. Centrifugation‚ which uses the idea of gravity‚ break up
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GENERAL BIOCHEMISTRY Problem Set No. 1 Answered by: Andrea Rose A. Fajardo of BSFT 2-1N 1. Calculate the pH of a dilute solution that contains a molar ratio of potassium acetate to acetic acid (pKa=4.76) of: a. 2:1 pH = 4.76 + log[2]/[1] = 4.76 + 0.3010 = 5.06 b. 1:4 pH = 4.76 + log[1]/[4] = 4.76 + (-0.6021) = 4.16 c. 6:5 pH = 4.76 + log[6]/[5] = 4.76 + 0.0792
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LIDE Learning Center‚ Inc. 6539 Isabel‚ Leyte Synthesis of Aspirin An Investigatory Project Presented to: Edmundo A. Quiñones Chemistry Teacher In Partial Fulfillment of the Requirements In Science and Technology III (Chemistry) Presented by: Kenneth Ivan P. Durano Cyrill Val G. Lozano March 6‚ 2010 APPROVAL SHEET This investigatory project entitled “The Synthesis of Aspirin” requirement for Science and Technology III (Chemistry) has
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Experiment 2: Centrifugation Title Centrifugation of fresh milk and Acetic Acid Objective(s): 1. To separate coagulated milk from mixture of fresh milk and Acetic Acid by centrifugation 2. To determine the relationship of speed of centrifugation with the coagulation of milk which separate from mixture. 3. To study the process of centrifugation Introduction Centrifugation is a process which materials suspended in a liquid medium undergo separation or concentrate due to the effect of gravity
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t Design and preparation of buffers effective at different pHs Abstract These experiments aimed to determine the optimum pH ranges various buffers are effective and provide opportunity for the use of the Henderson-Hasselbalch equation to prepare a buffer of a specific pH. Three different buffer systems were initially investigated; volumes of weak acid and weak bases of specified concentration were prepared and titrated against strong acid or strong base solutions with pH readings taken at frequent
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FC024 10th Jun 2013 Monday 2-4 pm Scientific Principles and Enquiry (Working in Pairs) Experiment 1 – pH Titrations Introduction In quantitative chemical analysis‚ acid - base reactions are often used to provide a basis for various titration techniques. The equivalence points of acid - base titrations can be estimated from the colour change of chemical indicators‚ such as phenolphthalein‚ methyl red‚ methyl orange and so on. The choice of an indicator
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Lab Name:Titration of NaOH Author: Simon Sun Lab Partner: Jason Lee & Fiona Wang Date: March 10th & 17th Introduction： The purpose of this lab is to observe the titration between acid and base‚ and calculate the morality of unknown solution base on the volume required to reach equivalence point and stoicheiometry. There are two groups of experiments. The first one is the reaction between nitric acid and sodium hydroxide which is a reaction between strong acid and strong
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Laboratory report Shae Aquino Chemistry 161L February 25‚ 2014 Conductivity of Solutions of Ionic and Covalent Compounds Purpose The purpose of this experiment was to use electrical conductivity on ionic‚ molecular acids‚ and covalent compounds in order to determine the properties of each compound. Introduction In chemistry‚ the term of an aqueous solution is defined as a substance that is soluble in water. For example‚ sodium chloride (NaCl) dissolves in water‚ or other
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100056 Acetic acid (glacial) 100% suitable for use as excipient EMPROVE® exp Ph Eur‚BP‚JP‚USP‚E 260 For general questions please contact our Customer Service: Merck KGaA Frankfurter Str. 250 64293 Darmstadt Germany Phone: +49 6151 72-0 Fax: +49 6151 72 2000 01 March 2014 Product number Packaging Qty/Pk 1000562500 Glass bottle 2.5 l 1000569025 Plastic container 25 l 1000569190 Plastic barrel 190 l Accessories 101595 Chemizorb® H+ Absorbent and neutralizer for spilled acids
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