Investigative question: how are esters formed ? Esters are formed by the reaction of an alcohol and a carboxylic acid‚ usually in the presence of sulphuric acid to catalyse the process‚ or by the reaction of an acyl chloride with a carboxylic acid (this requires no catalyst and is irreversible without additional reactants) are the most common ways used. Others include reactions of certain molecules such as structural rearrangement. Apparatus: Plastic dropping pipettes‚ Beaker (100 cm3 or 250
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Many devices are used in this poem to show the raw harsh night of November. The first line is a simile ‘tinkles like ice’ the word ‘ice’ represents the harshness and how painful ice is. When we look at the form of the poem‚ we can see how the poet uses enjambment to continue in what’s being said. The line ‘tries the door‚ and sidles past’ gives of a feeling of terror as the poet has personified it and gives of an impression that a human is trying to enter the house. On the second stanza the
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exposed to light; releases heat and may be explosive. Table 1.3: The table of the chemical properties of Styrene. Property( Condition‚ method) Color Clear‚ colorless to yellowish liquid State/ Form Volatile liquid Odour Strong pungent but tolerable and quickly disappearing odour Boiling Point 145.2°C Melting point -30.6°C Flash point 31°C (87 F) Autoignition temperature 490°C Relative density 0.9059 at 25°C Vapour pressure 10 mm at 35°C Saturation vapour concentration 6600 ppm at 20°C practically
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Introduction 1.1Background This report has been written as part of the academic requirements of the Master of Business Administration. 1.2Size up A small part ($5.4 million) of Rohm and Haas’ $1.9 billion sales (1983) is derived from the sale of metal working fluids. Currently these sales are realized through the product Kathon 886MW (886MW)‚ which is mainly used as a maintenance biocide in central metal working systems fluid reservoirs. Because of suggestions from the current end-users and
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would not allow the proper drying up of grain. Almost all the insect pests of stored grains have a remarkably high rate of multiplication and within one season‚ they may destroy 7-10 per cent of the grains and contaminate the rest with undesirable odours and flavours. Wheat (Triticum spp.) is a major cereal food for the Indian people and is stored in every home as flour where it was infested by insect pests like Tribolium sp. (Tenebrionidae: Coleoptera)‚ Sitophilus oryzae (Linnaeus) (Curculionidae:Coleoptera)
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personal hygiene means the reduction of body odour which can be unpleasant for the individual and others. Personal hygiene also makes you have feelings of self-worth and can make you feel valued. 1.2 Describe the effects of poor personal hygiene on health and well-being Not maintaining own personal hygiene can make the individual’s skin break down‚ this can in turn cause sores and can lead to infections and pain for the individual. The individual may have body odour which will make others find it unpleasant
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infection‚ discomfort and odours. From maintaining a high standard of personal hygiene an individual feels clean‚ presentable and comfortable. Through looking presentable and feeling clean an individual’s self esteem and self respect rises. There is less chance of infections developing and therefore the external body is healthier. 1:2 Describe the effects of poor personal hygiene on health and well being Bodily Odours – Poor personal hygiene can lead to unpleasant body odours‚ leaving the individual
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my parents ensure me to lock up all windows and the door so the odour doesn’t enter‚ since I suffer from asthma. There is this property a few yards from my house‚ where there was once constant burning of garbage at night‚ and it bothered my family and the neighbours a lot. My mother got in contact with the owner of the premises‚ told him about the problem‚ and it ceased a couple of days later. Burning of garbage or the strong odour of smoke does not welcome visitors to the area‚ and it brings bad
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A Synthesis of Safrole and o-Safrole W.H. Perkin & V.M. Trikojus J. Chem. Soc. 1663 (1927) HTML by Rhodium No direct synthesis of safrole has been recorded‚ the most recent attempt being that of Baker and Robinson (JCS‚ 1925‚ 127‚ 1424)‚ who distilled the product of the action of silver oxide and water upon gamma-piperonylpropyltrimethylammonium iodide‚ but obtained isosafrole‚ the double bond moving into the position of greater stability. Kawai (Sci. Papers Inst. Phys. Chem. Res.‚ 1925‚ 3‚ 263)
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FORTIFY PAP Category for Mosquito Repellents Objectives of Research The major objective of the research is to:- * Identify touch points for reaching the consumers. * How to create relevance for PAP category. * Identify the barriers for usage of Odomos. Data Sources To collect the data we followed primary research method to collect data. Primary Data Questionnaire Survey Structured Personal Interview Questionnaire Design Sample Design My sample size consist of
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