experimental techniques which can be used to tell us where the atoms are located in a molecule. Using advanced techniques‚ very complicated structures for proteins‚ enzymes‚ DNA‚ and RNA have been determined. Molecular geometry is associated with the chemistry of vision‚ smell and odors‚ taste‚ drug reactions and enzyme controlled reactions to name a few. Molecular geometry is associated with the specific orientation of bonding atoms. A careful analysis of electron distributions in orbitals will usually
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CLASS: 4 SAINS GUNAAN (SG) SCHOOL: SMK SERI INDAH CONTENT Content Introduction 9.1 Sulphuric acid 9.1.1 Properties of sulphuric acid 9.1.2 The uses of sulphuric acid 9.1.3 The industrial process in manufacture of sulphuric acid 9.1.4 Environmental pollution by sulphuric acid 9.2 Ammonia and its salt 9.2.1 Properties of ammonia 9.2.2 The uses of ammonia 9.2.3 The industrial process in manufacture of ammonia 9.3 Alloys 9.3.1 Physical properties of pure metals 9.3.2 Meaning and purpose of making
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Single Parent Households A Single parent is a person not living with a spouse or a partner who has all the day-to-day responsibilities of a child or children. Single parent households are common in every generation. In the past‚ being a single parent was no struggle at all‚ because things were not as expensive or as hard. In the 21st century‚ single parent households have their share of daily struggles and disadvantages. The issues of expensive foods‚ daycares‚ and clothes‚ limited time spent
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Organometallic preparation and addition to carbonyls‚ Wittig reagent preparation and Wittig rxn‚ Wolff‚ H-based nucleophile carbonyl reduction‚ imine formation‚ reductive amination (rxn only)‚ ketal/acetal formation‚ dithiane chemistry (rxn only)‚ alpha-bromination of ketones‚ -COOH properties (the trends on HW4)‚ Fischer‚ acidic/basic hydrolysis of esters/amides/nitriles‚ CH2N2‚ acid chloride formation (rxn only)‚ acid chloride rxns with esters and amides. 2 Rxn of carboxyllic acid derivatives
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a timescale. This process is called Mutarotaion2. Both anomers can be linked to other sugars but differently as the α-glucose resemble more in to starch while β-glucose resembles cellulose and is indigestible to humans. Within this experiment‚ the uses of acid catalyst such as
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HOUSEHOLD PRODUCTS (INDIA) LTD. (C) Introducing a New Product On 9 FEBRURY‚ 1968‚ Mr. Rahul‚ the marketing manager for toilet soaps‚ was examining the draft ‘test market proposal’ for a new toilet soap which was prepared by the product manager. Mr. Rahul had already cleared with the marketing director the commencement of test marketing around mid-year. He knew that test marketing activities were expensive and therefore wished to learn as much as possible from the test about various aspects of marketing
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determine the concentration of an unknown solution of potassium permanganate. INTRODUCTION: UV Spectrophotometer has 4 main components which is the UV light source‚ the sample‚ detector and the processor/recorder. Spectrophotometry is a technique that uses the absorbance of light by an analyte (the substance to be analyzed) at a certain wavelength to determine the analyte concentration. Useful wavelengths for spectrophotometry range from 185 to 3‚000 nm. Spectroscopy is one of the most powerful analytical
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is not a physical substance‚ we choose to use the substance metaphor to describe it. We’ll use three principles to guide us in the development of the energy concept. 1. Energy can be viewed as a substance-like quantity that can be stored in a physical system. 2. Energy can “flow” or be “transferred” from one system to another and so cause changes. 3. Energy maintains its identity after being transferred. If you are unsure what we mean by the use of a substance metaphor‚ consider how we
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CHEMISTRY PROJECT WORK SESSION -2013-2014 ROLL NO- CLASS-XII ‘A’ SUBMITTED BY SUBMITTED TO ROHIT LAKHERA Mrs. ANITA BISHT CERTIFICATE This is hereby to certify that‚ the original and genuine investigation work has been carried out to investigate about the subject matter and related data collection
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SCIENCE 5124/3 PAPER 3 (CHEMISTRY) 1hour 15minutes Additional materials: Monday 30th July 2014. Answer paper INSTRUCTIONS TO CANDIDATES Write your name‚ centre number and candidate number at the top of this page all separate Attempt all questions in SECTION A and only TWO questions in SECTION B SECTION A (45 marks) Answer all question in this section in the spaces provided Q1 Forensic scientists use paper chromatography to compare
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