Back Laboratory Program SAFETY IN THE CHEMISTRY LABORATORY 786 Pre-Lab Extraction and Filtration 790 1-1 Mixture Separation 792 1-2 Water Purification 794 3-1 Conservation of Mass 798 4-1 Flame Tests 801 Pre-Lab Gravimetric Analysis 828 13-1 Separation of Pen Inks by Paper Chromatography 830 13-2 Colorimetry and Molarity 834 14-1 Testing Water 838 804 7-1 Separation of Salts by Fractional Crystallization 806 7-2 Naming Ionic
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Gram Staining Lab Introduction Gram staining is a very important technique used in biology labs all over the world. It is a technique used to differentiate types of bacteria using certain physical and chemical characteristics of their cell walls. Gram positive bacteria (which show up purple after the gram staining process) have a very thick layer of peptidoglycan where gram negative bacteria (which show up pink after the gram staining process) have a much thinner layer of peptidoglycan. One thing
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Purpose: To find out the densities and to find out the name of the unknown metals. (Based on the extensive and intensive properties) Check up the words mass‚ volume‚ density‚ extensive properties‚ and intensive properties. Where do the units for mass and volume) come from and what do they mean? What is the density of distilled water? What is Archimedes principle? Does temperature affect the density of a solid? Liquid? Gas? Materials: Safety glasses‚ 10‚ 25 or 50 mL graduated cylinders
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Unknown Lab Report Dr. Nathan Cahoone Microbiology 204 December 9‚ 2010 Introduction There are many reasons for knowing the identity of microorganisms. The study and test was done by applying all of the methods that have been learned so far in the microbiology laboratory class for the identification of an unknown bacterium which I was using unknown #25. Results Unknown #25 had the following morphology on a streak plate: medium sized butyrous cream colored colony. Gram-staining was utilized
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TEXT BOOK OF BIOCHEMISTRY For 2nd year Medical Laboratory Technician Course (INTERMEDIATE VOCATIONAL) Author : S. Srinivasa Rao‚ B.Pharmacy‚ Jr. Lecturer in M.L.T.‚ Alluri Sri Rama Raju Govt. Junior College‚ Shanthi Nagar‚ Khammam. Editor : S. Kamalakar Rao‚ M. Pharmacy Senior Lecturer in Pharmacy‚ Department of Biotechnology‚ Govt. institute for post diploma courses in engineering and technology‚ Ramanthapur‚Hyderabad. INDEX Chapter I. Page No. Instrumental methods of Biochemical
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hair‚ tissue‚ etc. Others are enzymes that speed up cellular reactions. All proteins are made up of amino acids (Johnson‚ 2010). The purpose of this experiment is to determine whether peptide bonds are present in various food substances. The color violet will indicate the presence of proteins. The more intense the color is‚ the greater number of peptide bonds there are (Mbuthia‚ 2012). Methods Using the China marker‚ I numbered test tubes 1-5 for identification purposes. Using a pipet I added
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monoxide‚ and brine‚ to illustrate that “depending upon the concentration of dihydrogen monoxide in an egg and that in its circumventing environment‚ dihydrogen monoxide may diffuse into or out of the egg”. In summation‚ to genuinely understand the lab and make a plausible prognostication one must first grasp the concepts of the cell membrane as a semi-permeable barrier and the kineticism of dihydrogen monoxide. Cell membranes are semipermeable‚ denoting the membrane is a barrier to most‚ but not
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Academy Award winning filmmaker Sharmeen Obaid-Chinoy was presented the ‘Crystal Award’ by Hilde Schwab at the 2013 World Economic Forum meeting for her efforts in promoting human rights and women’s issues through film. The award was given at the official Crystal Award ceremony held at the World Economic Forum Congress Centre‚ Congress Hall in Davos‚ Switzerland. The World Economic Forum introduced the Crystal Award in 1995 to honour personalities who are highly regarded as both cultural leaders
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Physics Lab Report 1. For the wavelength measurement of different colors in the Hydrogen spectrum done in the lab‚ tabulate your data recorded along with the wavelength calculations performed for all colors in the spectrum. (2 points) Line Color a_left (m) a_right (m) a_average (m) sinq nm Red 0.235 0.27 0.2525 0.182145 5.47E-09 Green-Blue 0.17 0.33 0.25 0.180505 5.42E-09 Indigo 0.16 0.35 0.255 0.18378 5.52E-09 Violet? 0 0 0 0 0 To find the wavelength for all of the colors in this lab we used two
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chemicals before use. Abide by specific warnings and directions. 3. Collect all materials needed for a procedure before proceeding. 4. Perform reactions under the hood when directed. Chemicals may be weighed and prepared at balance or lab tables‚ but tests should be carried out under the hood. 5.Acids and caustic chemicals are stored in the hood. Please do not take these chemicals from the hood. Procedure: PART 1: Metathetical reactions Precipitation reactions A1. Add a
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