Date Performed: September 9 ‚2011 SPECTROPHOTOMETRIC DETERMINATION OF THE ACID DISSOCIATION CONSTANT OF METHYL RED M.C. Caligagan ‚M.N.Q. Tolentino and M.Q. Clores Institute of Chemistry‚ College of Science University of the Philippines‚ Diliman‚ Quezon City‚ Philippines Received :September 21‚2011 ABSTRACT This experiment aims to determine the acid dissociation constant value of Methyl Red by means of spectrophotometry. Ten samples were spectrophotometrically analyzed under a UV-Vis
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Application of Statistical Concepts in the Determination of Weight Variation in Samples del Castillo‚ Kevin S. Department of Food Science and Nutrition‚ College of Home Economics University of the Philippines‚ Diliman‚ Quezon City‚ Philippines Date: 26 November 2012 ____________________________________________________________________________________ Results and Discussion Statistics is one of the important tools used in chemistry. It defines the measurements gathered‚ and characterizes
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1 Practical report: Determination of concentration using a standard curve Introduction Spectrophotometer is an instrument that confirms the measurement of specified wavelength of light that passes through medium. The measurement of light absorbance by a solution is also done with spectrophometer. Absorption spectrum Spectrometers are mainly and widely functional in identifying the components of solutions that helps determine the components’ concentrations. Compounds are experimentally identified
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Application of Statistical Concepts In The Determination Of Weight Variation In Samples Margabacus Insti of Chemy‚ Univ of the Phili‚ Dili‚ QC ------------------------------------------------- Dept of MolBio and Biotech‚ CS‚ Univ of the Phili‚ Dili‚ QC ABSTRACT ------------------------------------------------- The objectives of the experiment are to use the analytical balance correctly‚ to gain an understanding of some concepts of statistical chemistry‚ and to apply statistical concepts in analytical
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RESEARCH ARTICLE Determination of lead and cadmium contents in sausages from Iran A. Abedi a‚ R. Ferdousi a‚‚ S. Eskandari b‚ F. Seyyedahmadian a‚ R. Khaksar c a National Nutrition & Food Technology Research Institute‚ Shahid Beheshti University of Medical Sciences‚ P.O. Box 19395-4741‚ Tehran‚ Iran (info@nnftri.ac.ir) b Food and Drug Control Laboratories (FDCLs) – Food and Drug Laboratory Research Center (FDLRC)‚ Ministry of Health and Medical Education‚ P.O. Box 11136-15911‚ Tehran‚ Iran
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Andy Chen and Alexander Van Buren 9/15/11 AP Chemistry Dr. Isotone Lab 1: Determination of the Empirical Formula of Silver Oxide Lab Objective: In this experiment‚ the percent composition and empirical formula of silver oxide will be determined. Silver oxide will be heated until it decomposes to silver metal and oxygen‚ and the percent calculation and empirical formula can be calculated based on combining the ratios of silver and oxygen in the reaction. Summary of
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Calcium ions. Images taken: http://www.chm.bris.ac.uk/motm/edta/edtah.htm‚ https://en.wikipedia.org/wiki/Nitrilotriacetic_acid Research Question: The determination of Calcium content in Five different Lentils using Complexometric Titration with Ethylenediaminetetraacetic acid (EDTA). Variables: Independent Variable: 1) The type of Lentil used ( Split Bean‚ Split Mung Bean‚ Brown Lentils‚ Red Lentils‚ Yellow
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This paper is a full determination for certain chemicals and their boiling points. It lists some already but given the atomic numbers of any material this project includes a conversion and calculation chart to find the freezing point of most any material. GOOD LUCK! Abstract: In this lab we determined the freezing point‚ and Kf‚ of pure 2‚4‚dichloralbenzne as well as a 2‚4‚dichloralbenzne/biphenyl solution. We used this information to determine the molar mass of an unknown (#24) by the 3rd step
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Theo Victor Cavite Chem 28.1 Melanie Bucsit-Carpio September 14‚ 2012 Spectrophotometric Determination of Iron in Aqueous Solutions as a Complex of 1‚10-Phenanthroline Introduction From the previous classical method of concentration determination of an unknown sample‚ this experiment now deals with the instrumental one. Unknown concentrations of iron in solutions were determined by measuring their corresponding absorbances through spectrophotometry. A spectrophotometer measures the amount
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and nice fair tone color you considered as White. No one really knows how biology fits into all of this‚ but apparently for some individuals race is base on biology. In the article‚ “The Slave Trader‚ the White Slave‚ and the Politics of Racial Determination in the 1850s” by Walter Johnson who elastrate how race was determined in the 1850’s and how the case of Morrison and White puts a huge confusion between the two races. This case as allow the court to view race in a different manner. This women
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