Department of Chemistry‚ NUS Checklist for Formal Laboratory Reports Contents Use the same as the title of the experiment. Title Write name (same as the name on the class list)‚ email‚ group‚ fumehood number and date clearly at the top of the front page. Summarize the laboratory report. Include a general description of the – scientific problem Abstract – experimental approach (in a general way) – key findings (including important numerical results) – conclusions Brief. Do not exceed the word
Premium Chemistry Reference Citation
Abstract-Timur Solid phase extraction is a sample preparation technique that overperform liquid /liquid extraction in its efficiency‚ labor intensity and waste disposal. The purpose of this lab is to learn how SPE can be used to identify trace amounts of Vanillin. Stock solution of vanillin in water with concentration of 50 ppm was prepared. Four solutions with concentration of 5 ppm‚ 1 ppm‚ 0.5 ppm and 0.1 ppm were made from stock solution. UV-Vis spectra of standard solution was recorded at 229
Premium Chemistry Solubility Liquid
Chapter 1 1.1 Traditional Malay theatre in Malaysia Malaysia has located the earlier culture in Southeast Asia which under Hinduism cultural process. The art of theatre in the east coast of Malay Peninsula was imported through the immigrant between Thailand and Malaya. Beside‚ large population of Chinese and Indian immigrated to this land for industry benefits when Malaysia was ruled by European countries. The impact of European colonised and adaption between different ethnic groups can be seen
Premium Dance Malaysia Ritual
[19593 Organic Chemistry of the Tramition Elements. Part r. View Online 551 Downloaded by University of Washington on 01 February 2011 Published on 01 January 1959 on http://pubs.rsc.org | doi:10.1039/JR9590000551 113. The Organic Chemistry of the Transition Elements. Part I. Tricarbonylchromium Derivatives of Aromatic Compounds. By B. NICHOLLS M. C. WHITING. and Many aromatic compounds‚ ArH‚ displace carbon monoxide from chromium hexacarbonyl with the formation of complexes Cr(CO)
Premium Benzene Solvent Sulfuric acid
Classification for Functional Groups Alcohols Lucas test (Differentiates primary‚ secondary‚ and tertiary alcohols) Reagent: ZnCl2 in conc. HCl Observation: Rate of reaction (tertiary alcohol> secondary alcohol> primary alcohol) Procedure: 2mL Lucas Reagent in test tube+ 3-4 drops of alcohol‚ stopper‚ shake vigorously‚ NOTE time required (less than 10m mins only) to form an emulsion or separate layers. Oxidation (Confirms if alcohol is oxidizable: presence of H in C-OH bond) Reagent:
Premium Carboxylic acid Alcohol Amine
12/07/2012 Cigarettes Must Be Banned Everyone knows the dangerous impacts of using cigarettes. However‚ not many people know how huge the issue is. In America‚ an enormous number of people die every year due to cigarette use. In particular‚ in 1990‚ approximately half of the preventable deaths in America were caused by cigarette use (Tobacco and Health). According to the Center for Disease Control and Prevention‚ cigarette use contributes more to the causes of deaths in America than the
Free Smoking Tobacco Passive smoking
Test Booklet Code - NO.: ABC 2216302 This Booklet contains 20 pages. Do not open this Test Booklet until you are asked to do so. Impoutant Instructions : 1. 2. The Answer Sheet is inside this Test Booklet. When you are directed to open the Test Booklet‚ take out the Answer Sheet and fill in the particulars on side-1 and side-2 carefully with blue/ black ball point pen only. The test is of 3 hours duration and Test Booklet contains 180 questions. Each question carries 4 marks
Premium Antiseptic Ammonia Christopher Nolan
first aid kit is a collection of supplies and equipment for use in giving first aid.[1] First aid kits may be made up of different contents depending on who has assembled the kit and for what purpose. It may also vary by region due to varying advice or legislation between governments or organisations. |Contents | | [hide] | |1 Format
Premium First aid
Part of plant used Leaf Botanical name Important constituents Uses Lemongrass and citronella Eucalyptus Cymbopogon spp Citral Citronella Terpenes Cineale Citronella Terpenes Eugenol Eugenol Terpenes Linalol Sanatols Myristicin Benzaldehyde Linalol Terpenes Perfumery Disinfectant Leaf Eucalyptus globulus Eucalyptus citriodora Eucalyptus dives Cinnamomum zeylanicum Eugenia caryophyllus Pinus spp Cinnamon leaf Clove Turpentine Lavender Sandalwood Nutmeg Almond Coriander
Premium Distillation Essential oil Water
Toxicol. 2008‚ 21‚ 53-69 2) Chemical Basis for the Extreme Skin sensitization Potency of (E)-4-(Ethoxymethylene)-2-phenyloxazol-5-(4H)-one. Chem. Res. Toxicol. 2010‚ 23‚ 1913-1920 3) Chemical Reactivity and Skin Sensitization Potential for Benzaldehydes: Can Schiff Base Formation Explain Everything? Chem. Res. Toxicol. 2012‚ 25‚ 2203-2215 4) Mechanistic Applicability Domains for Non-Animal Based Prediction of Toxicological Endpoints. QSAR Analysis of the Schiff Base Applicability Domain for Skin
Premium Chemistry Immune system Chemical compound