PAPER AND THIN-LAYER CHROMATOGRAPHY Lab 47 Michael Stravino‚ CHM 2211L‚ June 3‚ 2012 Abstract Thin-Layer Chromatography and Paper Chromatography can be used to identify identical compounds‚ unknown compounds‚ the number of components in a mixture‚ as well as other important uses not explored in this laboratory. This experiment explores these techniques to identify an unknown amino acid by TLC and analyze food colors using paper chromatography. By using 2.0 mL of dimethoxyethane and 18 mL of
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Title: Recrystallization of Pure Phthalic Acid‚ Naphthalene‚ and Anthracene Introduction Recrystallization is a method used for purifying solid organic compounds. It is the most efficient method to purify and remove impurities from a solid to allow a crystal to grow. The method is when the solute in a hot solvent yields to a solution. Once the solvent cools‚ the solution is saturated with respect to the solute‚ which is when it recrystallizes. A crystal is the end result of the method and it is a
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Isolation of Trimyristin from Nutmeg and preparation of Myristic Acid from Trimyristin by Hydrolysis Introduction Over 40% of medicinal chemicals in the world were developed from isolation of the natural source. These sources were from fungi‚ plants‚ bacteria‚ animals‚ etc. The techniques used to isolate and purify has been by extraction‚ distillation‚ recrystallization‚ and chromatography. In this experiment we will be trying to obtain a pure organic compound from a natural source. Because this
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References: 1) Weldegirma‚ S. Experimental Organic Chemistry Laboratory Manual: CHM 2210l and CHM 2211L Fall 2011/ Spring 2012; Mason OH‚ 2010; pp 4-8. 2) Wikipedia.com Affinity. http://en.wikipedia.org/wiki/Affinity (accessed September 19‚2011) 3) Wikipedia.com Elution. http://en.wikipedia.org/wiki/Elution (accessed September 19‚ 2011)
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References: Kluger‚ E. Introduction to Organic Laboratory Techniques: CHM 2211L Course Pack‚ Spring 2014. XanEdu Publishing‚ Inc.: Ann Arbor‚ MI‚ USA‚ 2014. p. 39- 41
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Lab 8: Isopentyl Acetate CHM 2211L October 22‚ 2014 Abstract Many esters are naturally occurring compounds that are responsible for the fragrance of fruits and flowers. Isopentyl Acetate is the compound responsible for the smell of bananas. However‚ when Isopentyl acetate is treated with H3O+ it will hydrolyze back into the carboxylic acid‚ which will change the fragrance. In this experiment 3.11g of Isopentyl Acetate were produced with a 51.92 percent yield. Introduction Esters are carboxylic
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Journal of Ethnopharmacology 159 (2015) 189–196 Contents lists available at ScienceDirect Journal of Ethnopharmacology journal homepage: www.elsevier.com/locate/jep Use of traditional Chinese medicine reduces exposure to corticosteroid among atopic dermatitis children: A 1-year follow-up cohort study Hsing-Yu Chen a‚c‚d‚1‚ Yi-Hsuan Lin a‚c‚d‚e‚1‚ Jau-Ching Wu f‚g‚ Sindy Hu b‚c‚e‚ Sien-hung Yang a‚d‚ Jiun-Liang Chen a‚d‚ Yu-Chun Chen h‚i‚j‚n‚ Su-Shun Lo k a Division of Chinese Internal Medicine
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Panther ID: NAME: FLORIDA INTERNATIONAL UNIVERSITY Department of Chemistry CHM 2211-U02– ORGANIC CHEMISTRY II PRACTICE EXAM I CHM 2211-U01 SAMPLE EXAM I‚ Page 2 Type of Vibration C-H Frequency (cm-1) 3000-2850 1450 and 1375 1465 3100-3000 1700-1000 3150-3050 1000-700 ca. 3300 2900-2800 2800-2700 1680-1600 1600-1400 2250-2100 1740-1720 1725-1705 1725-1700 1750-1730 1700-1640 1810 and 1760 1300-1000 Intensity s m m m s s s m w w m-w m-w m-w s s s s s s s Alkanes -CH3 -CH2Alkenes
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ccommodation Operations I CHM Page 11 HOUSEKEEPING ORGANIZATION CHART - 200 - 300 ROOMS (MEDIUM HOTEL) EXECUTIVE HOUSEKEEPER DESK COORDINATOR EX. ASST HK ROOMS EX.ASST HK PUBLIC AREA LAUNDRY HORTICULTURE PAINTER POLISHER CARPENTER PEST CONTROL HOUSEKEEPING SUPERVISOR HOUSEKEEPING SUPERVISOR LAUNDRY AND UNIFORM ROOM SUPERVISOR HK ATTENDANTS (FLORIST) (GARDENER) HK ATTENDANTS HK ATTENDANTS HK ATTENDANTS A ccommodation Operations I CHM Page 12 HOUSEKEEPING ORGANIZATION
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Science Division Course Offerings Astronomy (AST) AST 220. INTRODUCTION TO ASTRONOMY 4 cr. hrs.‚ Lec. 3‚ Lab. 2 This course covers the history of astronomy and the development of astronomical thought leading to the birth of modern astronomy and its most recent development. Emphasis is placed on the coverage of astronomical instruments and measuring technologies‚ the solar system‚ the Milky Way galaxy‚ important extra galactic objects and cosmology. Laboratory is required. Biology (BIO) BIO 103
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