Fractional Distillation & Gas Chromatography Exp. 1 Pre-Lab: 1) When two substances whose molecules are very similar from a liquid solution‚ the vapor pressure of the mixture related to vapor pressure of the pure substance. Also it could be defined as a two liquid are ideal solution when they don’t react with each other and they make no association. 2) Are a mixture of at least two different liquid‚ and known also as a mixture of two or more liquid in such away that its component
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Objective The purpose of this experiment is to identify an unknown proprietary drug using thin-layer chromatography. The unknown’s behavior in thin-layer chromatography will be compared with that of its possible component analgesics. The possible unknowns and their analgesic ingredients will be Anacin (aspirin‚ caffeine)‚ Excedrin (acetaminophen‚ caffeine‚ aspirin)‚ Motrin (ibuprofen)‚ and Tylenol (acetaminophen). Introduction Thin-layer Chromatography(TLC) was the method used to figure out and
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Heart Rate Of Daphnia. Aim: In this investigation I am going to see how alcohol affects the heart. Due to the ethical and safety issues involved in using in an investigation such as this I am going to use Daphnia (water flea) to conduct this experiment. Although humans and Daphnia are very different organisms‚ the affect that alcohol has upon the heart should be similar. Hypothesis: The hypothesis I am going to test during the investigation is: ‘Increasing the percentage of concentration
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FIRE RESISTANT BALLOON: Materials - 1 matchbox - 1 candle - 1 yellow colored balloon - 1 blue colored balloon - Half a cup of water Procedure: 1. For this experiment‚ the independent variable is whether the balloon is filled with water or not. The dependent variable is what happens to the balloon when it is placed above the lit candle. This is determined by observing the balloon. The constants (control variables) are how much the balloon is inflated and the amount
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PROCEDURE Part I Setting Up Experiment 2D: Separation of a mixture by Paper Chromatography Objectives: 1. To assemble and operate a paper chromatography apparatus 2. To study and the significance of Rf values 3. To test various food colorings and to calculate their Rf values 4. To compare measured Rf values with standard Rf values 5. To separate mixtures of food coloring into their components 6. To identify the components of mixtures by means of their Rf values Materials / Apparatus: See “Health
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EXPERIMENT 1: REACTIONS OF ENOLATE IONS WITH CARBONYL GROUPS Aims In this experiment we used two techniques for the reactions of enolate ions with carbonyl groups. One technique used was Doebner reaction and the other technique used was Claisen-Schmidt reaction. Therefore the aim of this experiment is to synthesize trans p-methoxycinnamic acid and to synthesize dibenzalacetone via an aldol condensation reaction between acetone and benzaldehyde. The products would be recrystallized using ethanol
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How Does Chromatography Work? Chromatography is a surface effect. It works by first starting off with an unidentified liquid being injected into a column. As the chemicals in the liquid move down the column‚ they separate depending on their physical and chemical attributes‚ such as speed and weight. To easily picture the process‚ the example will pertain to a paper chromatography process in which the liquid is moving over the paper‚ separating the mixture as it travels up the piece of paper. When
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Lab #3 Separating Metal Cations by Paper Chromatography Introduction/Purpose: In chemistry‚ it is important to effectively analyze the components in a given mixture. In order to do so‚ chemists will analyze a mixture either qualitatively or quantitatively using different methods and equipment. Qualitative analyses are subjective‚ and only gather “non-numerical” data such as the color‚ appearance‚ and smell of the components. This data
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The Philadelphia Experiment The Philadelphia Experiment took place in the fall of 1943 when a group of scientists funded by the U.S. government set out to turn a U.S. Cannon Class destroyer escort into an invisible war machine. The initial conspiracies surrounding the experiment were formulated by two scientists‚ William L. Moore and Charles Berlitz’. After extensive research‚ Moore and Berlitz’ concluded that The Philadelphia Experiment went awry when a U.S. Naval Destroyer was used to conduct
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Gas Chromatography: Purifying alcohol Introduction The goal of this lab is to understand the principles of chromatography by purifying alcohol using fractional distillation. Running standards with gas chromatography we were able to see and calibrate our data to find not only how much ethanol our alcohol attained but also what a mixed unknown sample contained. Chromatography is a way of being able to separate substances in solution that can help not only identify the analytes (the studied
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