spots were present for a compound‚ give Rf value for each component and state if the component was major or minor. | 100% hexane | 25% EtOAc in hexane | 10% EtOAc in hexane | Fluorene | 0.34 cm | 0.94 cm | 0.67 cm | 9 - fluorenol | 0.00 cm | 0.49 cm | 0.05 cm | 9 - fluorenone | 0.00 cm | 0.69 cm | 0.21 cm | 2. Explain how Rf values were generally affected by polarity of the solvent/eluent systems. As part of your answer‚ rank the solvent/eluent systems in order of decreasing polarity
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Abstract The aim of my research was to study automatic processes by replicating the previously carried out Stroop effect. The participants‚ 20 Richmond College students (10 boys and 10 girls) chosen by an opportunistic sample were taken into a quiet room separately‚ were presented with 6 lists of words‚ out of which 3 were congruent and the other 3 incongruent and the time taken for each participant to name the colour that the words were written in was measured and recorded. From
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the potential energy is constant along the chain and sharply rises to infinity at the ends. Therefore‚ we can replace the electron system by free electrons moving in a one dimensional box of length . Objective: The purpose of this experiment is to obtain the visible spectra of several cyanine dyes and then interpret them to a simple model of the electronic structure of the π system: the Particle in a Box. Theoretical Model “Particle in a Box” In the Particle in a Box model
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Anna Marcon Lab 1 Report June 9‚ 2014 Introductions Background The dominant thumb experiment is used to observe the correlation between handedness and thumb dominance and whether one inherited trait will always influences another correlated trait. Examples of this experiment of this can be traced back as far as 1908. In this experiment 50 people were asked to clasp their hands and the thumb dominance. Once the hands were clasped‚ one thumb would naturally overlap the other and the handedness
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THE EFFECT OF CHANGE IN pH ON THE ACTIVITY OF ENZYMES Introduction: Enzymes are catalysts that speed up‚ and control chemical reactions within a cell and break down complex molecules into smaller ones. Some of the chemical reactions that take place in the body produce toxic by-products which need to be converted. The liver produces hydrogen peroxide‚ which is extremely poisonous. When the catalase comes in contact with the hydrogen peroxide‚ it is broken down into water and oxygen. Aim:
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Sulfa Drugs: Preparation of Sulfanilamide Introduction The purpose of this experiment is to prepare sulfanilamide from p-Acetamidobenzenesulfonyl chloride. This will be done using reflux‚ vacuum filtration‚ and melting point determination. Experiment Scheme6 Figure 1. Reaction equation.6 A hot water bath was prepared in a fume hood using a 250-mL beaker. 2.5 g of p-acetamidobenzenesulfonyl chloride was placed into a 50 mL Erlenmeyer flask and 11 mL of dilute ammonium hydroxide solution
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positively charged ions (Cations) move away. Anode: Electrode which becomes negatively charged. During the process‚ positively charged ions (Cations) more towards the electrode whilst negatively charged ions (Anions) move away. [Electrodes for this experiment are firstly copper and secondly galvanized steel] (Wikipedia Editor ‚ 2012) (Wikipedia Editor ‚ 2012) (Columbia Electronic Encyclopedia‚ 2007) 2. Direct Current:
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Report of Experiment 28 - Digital Electronics with Altera Quartus Student ID 200907437 (group 41) ELEC 211 30 Nov 2012 and 7 Dec 2012 Abstract The experiment mainly introduced the fundamental function and application of the software Altera Quartus II with the DE1 development board and a host personal computer. The whole experiment contains five sections (or targets). The experimenters followed the guidance from the lab handout and accomplished the targets designed in the five sections. After
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EXPERIMENT 2: SUSPENDED SOLIDS 1.0 OBJECTIVE This objective of this experiment is to determine the quantity of suspended solids in polluted water samples. 2.0 INTRODUCTION Water quality is vitally important in our daily life. However‚ due to water pollution‚ the quality of water is questionable for safe usage. In order to determine water quality‚ one of the indicator and measurement that can be used is by suspended solids (SS). Suspended solids is one type of physical water-quality measurement
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Rock it out loud: discovering the location of harmonies that make your guitar sing. Purpose: To identify the locations of harmonics on an acoustic guitar and relate them to guitar string lengths. Hypothesis: If I pluck the sixth string of the guitar from frets nine- twelve‚ then those frets will not produce harmonics that are able to be heard clearly. Materials: Acoustic guitar ( adult or child sized) Cloth tape measure‚ metric Lab Notebook Procedures on finding harmonics on your
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