Technologies such as Facebook‚ Youtube‚ mobile phones and smart phones are just a few of the new technologies and applications being used every day by our generation to communicate. I am going to be looking at what some of these communication technologies are and how they affect our daily lives and finally answer the question if we the youthful generation of today would not be able to function without these communication technologies. First how would we define communication technologies? Information
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CHEMISTRY Guess Paper – 2013 Class – XI Subject - CHEMISTRY MAX MARKS=90 ……………………………………………………………………………………… General instructions: All questions are compulsory. Marks for each question are indicated against it. Questions number 1to 8 are very short –answer questions‚ carrying 1 mark each. Answer these in one word or about one sentence each. Questions number 9 to18 are short –answer questions‚ carrying 2 marks each. Answer these in about 30 words each. Questions number19 to27
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atoms can rotate and vibrate with respect to each other. These vibrations and rotations also have discrete energy levels‚ which can be considered as being packed on top of each electronic level. UV/Vis spectroscopy is routinely used in analytical chemistry for thequantitative determination of different analytes‚ such as transition metal ions‚ highly conjugated organic compounds‚ and biological macromolecules. Spectroscopic analysis is commonly carried out in solutions but solids and gases may also
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"Rubber" and "India rubber" redirect here. For other uses‚ see Rubber (disambiguation). This article is about the polymeric material "natural rubber". For man-made rubber materials‚ see Synthetic rubber. Latex being collected from atapped rubber tree Rubber tree plantation of Thailand （7 August 2011） Natural rubber‚ also called India rubber or caoutchouc‚ as initially produced‚ consists of suitable polymers of the organic compound isoprene‚ with minor impurities of other organic compounds
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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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I. Grade Level/Unit Number: 9-12 Unit 7 II: Unit Title: Mole Concept III. Unit Length: 7 days (on a 90 min. per day block schedule) IV. Major Learning Outcomes: Students should be able to: Mole Concept • Calculate formula mass. • Convert representative particles to moles and moles to representative particles. (Representative particles are atoms‚ molecules‚ formula units‚ and ions.) • Convert mass of atoms‚ molecules‚ and compounds to moles and moles of atoms
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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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EXPERIMENT 2: SYNTHESIS OF ORANGE II (2-NAFTHOL ORANGE OBJECTIVE 1. To produce dye based to the coupling of diazonium. 2. To understand the characteristic of dye orange II. INTRODUCTION The first dye was introduced by William Henry Perkin on 1856. It can be produced by the coupling of diazonium sulfanilic acid with nafthol in alkaline solution.. This was the common method used to produce dye nowadays. In this experiment‚ dye produced was the orange II. Azo compound is compound that contain
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Title: Daily Exercise. Topic: Exercise Habit. Thesis statement: Daily exercise causes life to improve. (Persuade) Type of essay: Cause and Effect. Technique: Dramatic Entrance. Effects: 1. Cardiovascular and pulmonary function. 2. Helps reduce the stress. 3. Improve of emotional fitness. Target: Young adults. Method: two By 2006‚ a study by the Centers for Disease Control and Prevention (CDC) found that 28.5 percent of Americans between the ages of 20 and 39 were obese
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The Yoruba People of Nigeria Among the many tribes found in Africa‚ the Yoruba People of Nigeria are among the most popular and well known. The Yoruba are the tribe that many Africans confess that their family roots started from and therefore follow the religion and culture of the Yoruba. These people are indigenous to the Southwestern parts of Nigeria and Benin. They may not be the only tribe in Africa‚ but they certainty have an interesting culture along with one of the oldest ancestry lines
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