useful solvent for many chemical processes. The solid was already in powder form therefore we did not have to crush it but it the unknown was in a tablet form‚ one would need to reduce it to a powdery-like form in order to perform this Thin-Layer Chromatography experiment. The powder solution was thoroughly mixed with a glass rod in the test tube containing
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Column and Thin-Layer Chromatography of Capsicum Frutescens L. Pigments John Cyril Abanto*‚ Vernalyn Abarintos and Clarice Gail Abella Department of Chemistry‚ College of Science University of Santo Tomas‚ Espana Street‚ Manila 1050 Date Submitted: September‚ 2010 ____________________________________________________________ _________________________________ Abstract: The experiment was done to separate and analyze the components of chili pepper. Chromatography was used because of its
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distillation and gas chromatography based on their difference in boiling points. The boiling point of hexane is 69 degrees Celsius and the boiling point of toluene is 110 degrees Celsius. Three fractions were collected for both simple and fractional distillation. The first fraction was hexane since it had the lower boiling point. The second fraction was a mixture of toluene and hexane. The third fraction was toluene since it had the high boiling point of 110 degrees Celsius. Gas chromatography was also preformed
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References: 1) E. Stahl‚ Thin Layer Chromatography‚ Springer-Verlag‚ New York‚ 1969 2) Camag Scientific‚ Inc.‚ 515 Cornelius Harnett Drive‚ Wilmington‚ NC 28401‚ phone 800-3343909‚ fax 919-343-1834 3) Desaga GmbH‚ P.O. Box 101969‚ D-69009 Heidelberg‚ Germany‚ phone 0-62-21-83590‚ fax 0-62-21-840887
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of service is entitled to Service Incentive Leave of 15 days that must be consumed from January to December. 2. Sick Leave a. No sick leave should be approved without certification from a credible physician b. In case the employee is unable to inform the management personally‚ he/she could send a message or ask someone to notify the HR Staff/HR Director on the first day of illness or injury. 3. Emergency Leave a. An employee is granted emergency leave when he/she is beset with unforeseen incidents
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Men Take Paternity Leave from Work Katrina Baron ENG/102 Vicki Lynn Samson Everyone knows that expecting mothers take maternity leave from work when their child is born. With that being said according the Family Medical Leave Act excepting fathers are allowed paternity leave from work. In order to better support the mother of their child along with personally care for their child‚ a father should be allowed a paternity leave. Many employers do offer paternity leave but some offer it as
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Stuffed Bell Peppers With Spinach-Onion Side Dish Minutes to Prepare: 50 Minutes Minutes to Cook: 2 Hours Number of Servings: 2 About the recipe: Stuffed pepper is the incredible American dish that can’t be found easily in every restaurant. The mind blasting dish gets its face by filling bell peppers with yummy stuffing that varies from Manchego cheese‚ spinach‚ rice and dolma to beef or cod. These stuffed bell peppers make an excellent meal when served with spinach-onion side dish. The sweetness
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700/233 1.1 Issue 1: Maternity Leave 233 The issue of maternity leave is a debatable topic among governments‚ employers and employees with differing interests. Varying across countries‚ Malaysia practices a minimum of 60 days according to the Employment Act 1955 (Lawnet.com.my 2010) . In theSun Newspaper‚ Chandranagayam (2010) discussed how Malaysian practitioners responded poorly towards National Union of Bank Employee’s (NUBE) call to increase maternity leave from 60 to 90 days‚ citing business
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Science High School City of Puerto Princesa “ MALUNGGAY LEAVES AS SHAMPOO” A Project Proposal in Partial Fulfillment in the subject Elective Science IV Antonieta C. Miguel Adviser Eden E. Gutierrez The researcher 2011-2012 Background of the Study This research is entitled “Malunggay leaves as Shampoo” this research is all about using malunggay leaves as shampoo. Malunggay leaves once considered a poor man’s vegetables but now it is known as
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of Chlorophyll from Fresh Spinach and Investigation of the Photochemistry of Chlorophyll Chlorophyll a Chlorophyll b E5 - Extraction of Chlorophyll from Fresh Spinach E6 - Investigation of the Photochemistry of Chlorophyll The aim of this experiment is to investigate the photochemistry of chlorophyll. This experiment will be performed in two lab periods. In the first lab period you will extract chlorophyll‚ the green pigment in leaves‚ from spinach. In the second lab period
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