perspective of a measurement could be different than the others‚ but the lab cannot be preformed solo. When it comes to improving the lab‚ there aren’t to many ways to ensure accurate measurements due to the fact that in any experiment there are human and environment variables that cannot be accounted for‚ or even prepared for. In any experiment there will always be human error. Group Lab Report The purpose of this lab is to use a variety of analytical skills and methods to determine the empirical
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| | Kinetics Author: Katie Wood Instructor: Donald Kavanagh Chem 106b‚ Section 001 Lab Performed 8th‚ 2012 Lab Report Submitted February 22nd‚ 2012 Abstract The purpose of the lab was to determine the order of reaction for the dye Red #40. By measuring the reaction rate between bleach and the dye‚ the order of the reaction was determined to be first order. Introduction The study of kinetics is important for studying the amount of time it takes for a particular reaction to reach
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Formal Lab Report #1 I. Basics Title of the Experiment: The Empirical Formula of an Oxide Authors: Section Number: Chemistry Location and Date II. Abstract The aim in this lab was to determine the empirical formula of an oxide of magnesium through combustion in air. This was achieved by heating an established mass of magnesium in air inside of a crucible‚ ultimately attaining a compound that contained Mg and O. The major result of the experiment was the empirical formula of the oxide of magnesium
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Review for Bio 103 Lab Midterm Read the lab manual and study your worksheets. Vocabulary: Metric system‚ percent error‚ systematic error‚ random error‚ accuracy‚ precision Cylinder‚ beaker‚ pippette‚ balance‚ meniscus Field of view‚ inversion‚ total magnification‚ depth of field‚ par focal Microscope parts: eye piece‚ body tube‚ arm‚ nosepiece‚ objectives‚ stage clips‚ mechanical stage‚ diaphragm‚ condenser‚ fine and course adjustments‚ light stage‚ base Protein‚ peptide bond‚ simple sugar
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Objectives: 1. To identify the relative densities of some common liquids and solids. 2. To determine the densities of water‚ an unknown liquid‚ a rubber stopper‚ and an unknown rectangular solid. 3. To determine the thickness of a piece of aluminum foil using the density concept. 4. To practice proficiency in performing the following experimental procedures: pippeting a liquid‚ weighing by difference‚ and determining a volume by displacement. Apparatus: Tall glass cylinder‚ glass marble‚ rubber
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tissues ; Pipets‚ serological‚ 10-mL ; Sample of consumer sports drink‚ 10-mL ; Spectrophotometer ; Test tube rack Procedure: 1) Preeminently‚ follow all laboratory safety guidelines ensuring that you have safety goggles on at all times throughout the lab. 2) Fill the cuvette 2/3 of the way with water. 3) Select the appropriate wavelength on the spectrophotometer. 4) Place the cuvette in the spectrophotometer and click the calibrate button. 5) Put 5mL of stock solution into test tube. 6) Fill
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S.4Chemistry 2nd Term Project Be a Chemical Analyst-Analysis on ethnoic acid. Objective This experiment aims at determining the percentage by mass of ethanoic acid(CH3COOH) in a commercial vinegar using titration method. Chemical reaction involved: CH3COOH(aq) + NaOH(aq)→ NaCH3COO(aq) + H2O(l) Apparatus: An electronic balance‚ a 10.0cm3 pipette‚ a 25.0cm3 pipette‚ a pipette filler‚ a 250.0cm3 volumetric flask‚ a burette‚ stand and clamp‚ a conical flask‚ a white tile‚ 3 large beakers‚
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A. Goal and Purpose: Session 1: In this lab‚ we will achieve a simple Friedel-Crafts alkylation of anthracene. The choice of anthracene as an aromatic substrate stems from two considerations. First‚ there is a question of regioselectivity. Second‚ anthracene and its derivatives are highly visible under UV light. Session 2: In this lab‚ we will complete a partial conversion of 9-acetylanthracene using m-chloroperoxybenzoic acid (mCPBA). We will also determine by NMR‚ the regiochemistry of the
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Investigating the Determining Characteristics of Cations and Anions Chem 111 Sec 560 Introduction: The purpose of this lab was to study the specific characteristics of cations and anions‚ and ultimately to be able to identify an unknown substance based on our studies and tests using the logic trees developed through the experiment. A logic tree is a graphical display of the findings from this lab which‚ through a series of yes/no questions‚ elimination tests
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Synthesis Procedure 1 -1.0 Introduction A Cobalt-Amine-Halide compound is synthesized from cobalt (II) chloride hexahydrate. An orange-tinted solid is produced and is considered to be unknown since the specific ligand amounts are unknown. By determining the percent composition of various elements and compounds in the unknown‚ its true identity can be predicted. Chloride‚ ammonia‚ and cobalt are three examples of percent compositions determined to help narrow the selection of possible unknowns
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