UNIVERSITIES 2012‚ 28(3)‚ 415—418 Determination of Nicotine in Tobacco by Capillary Electrophoresis with Electrochemical Detection SUN Jin-ying1‚ XU Xiao-yu1‚2‚ YU Huan1 and YOU Tian-yan1* 1. State Key Laboratory of Electroanalytical Chemistry‚ Changchun Institute of Applied Chemistry‚ Chinese Academy of Sciences‚ Changchun 130022‚ P. R. China; 2. Ministry of Public Security of Jilin Province‚ Changchun 130051‚ P. R. China Abstract A sensitive‚ simple and low-cost method based on capillary electrophoresis(CE)
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Solutions Solutions are a combination of solvents and solutes. When a solute dissolves into a solvent‚ the combined product of the two reactants is called a solution. The definition of a solute is the reactant that’s being dissolved. The only difference from a solute and a solvent is that the solvent is the one that’s doing the dissolving. Molecules randomly flow in all directions until there is an equal concentration throughout the solution. The dissolving process can vary depending
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Clare Chong P2 ! ! ! ! ! Chemistry Practical 4: Measuring rate of reaction Aim of experiment: To determine the rate of reaction when the concentration of I2 increases. ! ! ! Chemical equation: 2Fe3+ + 2I- --> 2Fe2+ + I2 ! ! ! Apparatus & materials: Apparatus Quantity 50ml Pipette 1 10ml Pipette 1 Pipette bulb 1 100ml beaker 2 50ml Burette 1 250ml Conical Flask 6 Timer 1 Distilled water 100ml or more 50ml Measuring
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Chemistry Coursework – Titration Background Science A titration is the neutralisation of an acid or an alkali. To achieve this‚ one must be added to the other in a specific amount‚ strength and concentration. A substance is neutral when its pH is 7. It is most acidic closer to 0 and is most alkaline closer to 14. 28492453194050 0 7 14 595423979670
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References: 1. Dr. G. Maguire‚ 2009‚ Inorganic Chemistry (Chem. 210) Practical Manual‚ UKZN Durban. 2. Werner‚ A. “Über strukturisomere Salze der Rhodanwasserstoffsäure und der salpetrigen Säure” Berichte der deutschen chemischen Gesellschaft 1907‚ volume 40‚ 765-788. DOI: 10.1002/cber.190704001117
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Title: The Effects of Microwaved Water on Plant Growth Problems: 1. What are the factors that make the microwave harmful? 2. What happens to the water (when microwaved) that causes it to affect plant growth? 3. What are the effects of microwaved water on the growth of plants? Hypotheses: 1. The micro wavelength radiation the microwave contains makes it harmful. 2. The water undergoes ionizing radiation which causes it to affect the growth of the plant 3. The growth of the plant
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Level *0281936391* CHEMISTRY Paper 5 Planning‚ Analysis and Evaluation Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a soft pencil for any diagrams‚ graphs or rough working. Do not use staples‚ paper clips‚ highlighters
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Kayla Adkins Forensic Chemistry Exam 2 I have been honest and observed no dishonesty. 1. In specific detail‚ describe a published procedure for the definitive identification of Heroin utilizing gas chromatography-mass spectroscopy (GCMS). Heroin is a white crystalline powder with no odor and a bitter taste. It is a derivative of morphine in that the –OH (hydroxyl group) is replaced by an acetyl group‚ -OCOCH3 and has a molecular formula is C21H23NO5 with a molecular weight of 369.42
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Chemistry project Aim: To compare rate of fermentation of given sample of wheat flour‚ gram flour‚ rice and potatoes. Submitted By: Name: Ipshita Chatterjee Class: XII – A Roll No.: 12 Index: S.no | | Page no. | 1. | Certificate | | 2. | Acknowledgement | | 3. | Declaration | | 4. | Objective | | 5. | Introduction | | 6. | Requirements | | 7. | Procedure | | 8. | Observations | | 9. | Bibliography | | Objective: In this experiment the main objective is to
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special occasions like independence day. The excitement produced by fireworks like ‚ brightening the night sky and plunging it with vivid displays of colour and insignificant‚ which makes them a crowd pleaser. Behind all the excitement of fireworks‚ chemistry plays an important role in creating the vivid colours we witness lighting up the sky. The actual chemical reactions that take place in the explosions require the use of oxidisers‚ reducing agents and binders. The additions of varying metal chlorides
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