ANALYSIS OF MOUTHWASH Background Information: Commercial mouthwashes are mixtures of water‚ alcohol‚ dyes‚ flavorings‚ and other compounds. In this experiment‚ you will use gas chromatography to determine the alcohol content of the mouthwash. Since the volumes of alcohol and water are not additive when mixed‚ a calibration curve must be used. It will provide the correction factor needed for alcohol-water mixtures. The calibration curve will be prepared by placing a known amount of alcohol
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CHM 510 LABORATORY REPORT Experiment 1: Gas Chromatography (GC): Optimization of Flow Rate and Column Temperature Name: AFIQ B. ANWAR Student No.: 2012621072 (AS2253A) Date of experiment: Date of report submission: Lecturer’s Name: PN. HALIZA Gas Chromatography (GC): Optimization of Flow Rate and Column Temperature INTRODUCTION The main purpose of the experiment is to investigate the effects of column temperature and flow rate on the separation of methyl esters compounds
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The purpose of this lab was to use gas chromatography to determine the relative amounts of the three components of gas products from the dehydration reaction of 1- and 2-Butanol with sulfuric acid and the dehydrobromination reaction of 1- and 2-Bromobutane with potassium tert-butoxide. E1 reactions are two-step unimolecular reactions. The first step of an E1 reaction occurs when a leaving group‚ which consists of a weak base‚ leaves an organic compound‚ leaving an intermediate carbocation. In the
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9.1 Orbitals and Theories of Chemical Bonding 1. Which one of the statements concerning valence bond (VB) and molecular orbital (MO) bond theories is correct? a) MO theory predicts that electrons are localized between pairs of atoms. b) In VB theory‚ bonding electrons are delocalized over the molecule. c) MO theory accurately describes bonding in O2 and NO‚ VB theory does not. d) VB theory can describe molecular bonding in excited states. e) MO theory is used to accurately predict
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In many ways‚ in Mohsin Hamid’s novel The Reluctant fundamentalist‚ the relationship between Changez and Erica mirrors that the failed love affair between Changez and the United States. Throughout the novel these two idea’s run parallel to each other‚ for example when Changez and Erica make love she can only accept him if he pretends to be Chris‚ Not unlike how Changez can only be accepted into America society if he possesses an American degree an American job and supresses his Pakistani identity
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experiment is called chromatography. The materials used consisted of – 3 pieces of chromatography paper‚ a tall clear glass‚ water‚ table salt‚ 1 tsp. measuring spoon‚ an 8 oz. measuring cup‚ pencil‚ ruler‚ 6 washable markers‚ and paper towels. The markers used in this experiment have to be water soluble therefore I used washable markers made by Crayola. The colors I chose were brown‚ teal‚ red‚ orange‚ black‚ and green. The salt solution served as the mobile phase while the chromatography paper served
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Unversity Visca‚ Babay City‚ Leyte Name: Millama‚ Engene O. Course & Year: BS Biotech-2 Lab Schedule: W (1-4) Group 5 Date Performed: Dec. 12‚ 2012 Date Submitted: Jan. 9‚ 2013 Separation of Photosynthetic Pigment by Paper Chromatography I. INTRODUCTION There are different types of components in plant pigments. The most important and abundant chemical pigment found in plants is chlorophyll. This pigment exists in two forms; chlorophyll a and chlorophyll b. Chlorophyll a‚ being
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tinted marks on their mouths and a happy‚ satisfied grin on their faces. The reason for conducting the research is to know how the colors of our favorite candy-coated sugary rewards came to be and that method of knowing is what we call “Candy Crhomatography”. Chromatography by definition according to Webster’s dictionary means “ a method for separating the constituents of a solution (gas or liquid) by exploiting the different bonding properties of different molecules”. In this case‚ the molecules
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out‚ results indicate that RF shields reduce the SAR effectively. Full shield among various ferrite shapes and M4 among various ferrites are tested to be the most effective in reducing average E-field. This is because SAR decreases with increase in size of ferrite sheet whereas SRF increases with increase in size of ferrite sheet. Results have shown that attachment of RF shield on mobile phone not only reduces SAR in head model but also the radiated power. Moreover‚ the RF shielding does not degrade
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separation of the component can be measured by using the Rf formula: Rf= By comparing the Rf value from Table 1 and Table 2‚ we can find that there is Carotene‚ Phaeophytin‚ Xanythophyll‚ Chlorophyll a and Chlorophyll b present in the spinach leaves. But the Rf value of Chlorophyll b is not similar with the Rf that was calculated. It may be because of the calculations of the distance was done wrongly and therefore affect the Rf value of the Chlorophyll b. The molecules of carotene are the smallest
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