pH and Chromatography Lab Report Kevin Rivera Biology Mr. Langley 2C 10/7/13 Introduction In this lab‚ of pH and Chromatography‚ in the pH aspect of the lab we are trying to figure out the pH level of certain chemicals by writing down of known solutions to find the type of unkown solution using pH standards. In the Chromatography‚ we are trying to separate the chemicals using water and a piece of paper. Methodology Materials: Safety Goggles pH indicator & pH indicator key
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The Separation of Ink Chromatography Emanuel Alvarado Period 06 Group Members: Jason Fernandez‚ Reyna Favela & Lucero Ochoa I. Title: The Separation of Ink Using Chromatography II. Date: October 3rd‚ 2012 III. Purpose: To separate a mixture using paper chromatography. IV. Procedure: 1. Fill beaker with 100 mL water. 2. Poke hole in filter paper with scoopula approximately 1 cm from top. 3. Place dot of ink approximately 2 cm from the bottom of the filter paper
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Cfcs Cause Deterioration of the Ozone Layer The deterioration of the ozone layer ‚ caused by Cfcs‚ endangers the lives of humans ’. Cfcs have a diminishing effect on the ozone layer. Furthermore‚ the deterioration of the ozone cause an increase of Ultraviolet (UV) radiation which can have a negative effect on human skin and eyes. As a writer for newsweek‚ I have investigated the scenario and found the following information. The earth ’s atmosphere is a blanket of air that surrounds the planet
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tested for by a possible employer include Cocaine (crack)‚ Amphetamines (crystal)‚ Opiates (codeine‚ morphine‚ heroin)‚ PCP (phencyclidine)‚ and Marijuana. Gas chromatography/mass spectrometry is used to test hair and urine samples of possible drug abusers or job applicants‚ and it is the best method for the testing of drug use. Gas chromatography and mass spectrometry are two different methods for identifying chemical substances‚ and the two instruments have be coupled together to perform a highly complementary
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show off to the other about his job and worthy marriage and kid only to be surprised when his friend reveals his occupation and status. Then comes the sudden change in the first man attitude towards his friend. Typical Chekhov kind of humor. The thin man turned pale and rigid all the once‚ but once soon his face twisted in all directions in the broadest smile; it seemed as though sparks were flashing from his face and eyes. He squirmed‚ he doubled together‚ crumpled up… His portmanteaus‚ bundles
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Alkenes from Alcohols: Analysis of a Mixture by Gas Chromatography Aim: To analyze a mixture of alkenes by gas chromatography. Introduction: In this lab‚ we specifically used elimination reaction; however we only used the E1 reaction. In the presence of strong acids‚ alcohols protonate to form a good leaving group‚ namely water. Upon loss of a proton to a good leaving group‚ an introduction of unsaturation (a double bond) can be preformed. According to Wikipedia‚ an E2 reaction is typically
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...................................................................... 12 4. Basic principles and applications of Potentiometry .................. 16 II. Separation techniques ............................................................ 25 1. Chromatography ................................................................... 25 2. Electrophoresis ..................................................................... 53 III. Immunoassays .............................................................
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Do television shows portraying thin female actresses influence girls to develop a negative body image? Ellen Goodman’s‚ “The Culture of Thin Bites Fiji” makes a persuasive argument about how people’s opinion of their physical appearance changes throughout the years. Goodman blames television for changing of teens and adult’s view of weight. Goodman uses the appeal of logos‚ ethos‚ and pathos as a persuasive technique in her article. “You look wonderful! You’ve put on weight.” Goodman states that
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ISO-OSI 7-Layer Network Architecture This lecture introduces the ISO-OSI layered architecture of Networks. According to the ISO standards‚ networks have been divided into 7 layers depending on the complexity of the functionality each of these layers provide. The detailed description of each of these layers is given in the notes below. We will first list the layers as defined by the standard in the increasing order of function complexity: 1. Physical Layer 2. Data Link Layer 3. Network Layer 4.
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different opinions on what is and isn’t good enough. The author does a great job at explaining this and showing the bad side of this mindset by using many different rhetorical devices such as ethos‚ pathos‚ and logos. Ellen Goodman wrote‚ “The Culture of Thin Bites Fiji’’‚ to show her argument on the constant changes in how people view themselves and others throughout their life. Ellen Goodman uses many different rhetorical devices. At the beginning of this passage‚ she talks about how many teenagers’ lives
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