____________________________________________________________ ____________________________________________________________ ______ This lab was basically about finding the percentage of acetylsalicylic acid in an aspirin tablet. First‚ the base was created‚ which was made out of 1.00 g of NaOH and D-water. Then the buret was attached to the clamp on the ring stand and the base was poured into the buret. After that‚ one by one‚ an aspirin tablet was dropped into an Erlenmeyer flask filled with
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AP Chemistry Name _________________________________ Period ___ Date __/__/__ 4 Reactions in Aqueous Solution Precipitate Practice #1 Write balanced molecular and detailed ionic equations. Strike out any spectator ions. 1. Solutions of lead nitrate and potassium chloride are mixed. Pb(NO3)2(aq) + 2 KCl(aq) PbCl2(s) + 2 KNO3(aq) Pb2+ + 2 NO3- + 2 K+ + 2 Cl- PbCl2(s) + 2 K+ + 2 NO3- 2. Solutions of sodium sulfate and calcium bromide are mixed. Na2SO4(aq)
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Lysergic Acid Diethylamide (LSD) was created by chemist Albert Hofmann in Switzerland while attempting to create a blood stimulant. The drug was utilized for psychological experiments for many years and this even led to the military experimenting with it as a biological weapon in the 1960’s. During the 1960’s‚ as a result to the wide dispensing of the drug for experimental purposes‚ it wound up being the “…counterculture used the drug to escape the problems of society…” (LSD: A Short History). Due
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Lab 12: Titration of Acetic Acid in Vinegar Abstract: To lesarn how to titrate chemicals in a lab. Also to be able to determine the concentration of an acetic acid solution. Purpose: To learn how to titrate‚ and calulate the concentration of an acetiuc acid solution. In this case the concentration of vinegar‚ which is diluted acetic acid. Hypothesis: The sodium hydroxide used in this titration would balance out the acetic acid in vinegar. The phenolpthalein‚ a acid –base color indicator will
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Determination of the Concentration of Acetic Acid in Vinegar Lab Exercise 4 CHEM 1106 9/19/12 Purpose: Standardize a sodium hydroxide solution using a primary standard acid. Determine the molarity and the percent by mass of acetic acid in vinegar by titration with the standardized sodium hydroxide solution. Introduction: Vinegar is a dilute solution containing acetic acid. Since vinegar has a low pH‚ it can be titrated with a base. Titration is a method used in order to ascertain
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Acid Determination of Vitamin C Tablets and Salt Solutions Chem 1290-016 03-05-2010 ------------------------------------------------- Purpose: The purpose of this lab was to use acid-base titrations to find the mass percent of ascorbic acid in a Vitamin C tablet. A known concentration of sodium hydroxide was used and the value found was compared to the stated amount of ascorbic acid listed on the vitamin container. Also in this lab the acidity of different salt solutions were tested using
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Exercise 10: Acid/Base Balance Worksheet Respiratory Acidosis and Alkalosis Activity 1: Normal Breathing 1. At 20 seconds‚ pH = 7.38 2. At 40 seconds‚ pH = 7.38 3. At 60 seconds‚ pH = 7.38 4. Did the pH level of the blood change at all during normal breathing? If so‚ how? No. 5. Was the pH level always within the “normal” range for the human body? Yes. 6. Did the PCO2 level change during the course of normal breathing? If so‚ how? No. Activity 2a: Hyperventilation
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Testing for reducing sugars‚ non-reducing sugars‚ starch‚ lipids and proteins in unknown substances: Our aim: was to find out which substances from our five samples have reducing sugars present to determine what they may be for example; they could be monosacchrides or disaccharides. This was carried out by using Benedict’s test. To find out which substances from our five samples were non-reducing sugars‚ since some disaccharides are reducing sugars and this would be carried out by using Benedict’s
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Conservation of Mass 9/27/10 Block A5 Materials * Baking Soda (NaHCO3) * Vinegar (acetic acid‚ CH3COOH‚ solution) * Ziploc bags * Weight boats * 100mL graduated cylinder * 150mL beaker * 400mL beaker * Balance The purpose of this lab was to find the mass of the products and reactants and to show a chemical reaction between them. I will use our results to apply what we’re learning in class which consists of: intensive and extensive properties‚ physical and
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A REPORT ON Study tour & project Subject: Molecular Farming Presented by Mr. Pethkar sachin tanajirao Department of Plant biotechnology At College Of AgriculturalBiotechnology‚Latur. Affiliated to Marathwada AGRICULTURAL UNIVERSITY‚PARBHANI Academic year 2010-2011 PREFACE It gives me great pleasure to write a project report of our study tour‚ which was an unforgettable event in my degree course. Study tour gaves me such memorable moments which I can’t forget through
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