formed from numerous things. One in particular will be smoking. Cigarettes contain over 4000 chemical compounds‚ of which at least 400 are toxic. At least 43 are known carcinogens which cause cancer in humans. There are few that I found which are: Benzene (patrol addictive)‚ formaldehyde (embalming fluid)‚ ammonia (toilet cleaner)‚ acetone (nail polish remover)‚ nicotine (insecticide/addictive drug)‚ carbon monoxide (car exhaust fumes)‚ arsenic (rat poison)‚ and hydrogen cyanide (gas chamber poison)
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Synthesis of DEET Abstract: For this experiment m-toluic acid was reacted with thionyl chloride resulting in a nucleophilic acyl substitution which could then be used to create DEET with excess diethyl amine (Figure 1). This was done by adding diethyl amine drop wise using a seperatory funnel which resulted in a gas formation which was controlled with a condenser attached to a gas vacuum. The resulting mixture was then washed to remove excess acids and bases and rotovapped. DEET was synthesized
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Chemicals in Food Chemicals are added to food for (i) their preservation‚ (ii) enhancing their appeal‚ and (iii) adding nutritive value in them. Main categories of food additives are as follows: (i) Food colours (ii) Flavours and sweeteners (iii) Fat emulsifiers and stabilising agents (iv) Flour improvers – antistaling agents and bleaches (v) Antioxidants (vi) Preservatives (vii) Nutritional supplements such as minerals‚ vitamins and amino acids. Except for chemicals of category (vii)‚ none
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NORTHERN CARIBBEAN UNIVERSITY DEPARTMENT OF BIOLOGY‚ CHEMISTRY and ENVIRONMENTAL SCIENCE LABORATORY MANUAL Instructor: Dr. M. Wilson CHEM401: BIOCHEMISTRY for NURSES Prepared by: Oreane Collins CHEMISTRY LABORATORY REGULATIONS AND SAFETY PRECAUTIONS Reference: http://www.sciencebyjones.com/safety_rules.htm Thanks to the Flinn Scientific Safety Rules for much of the below. General Guidelines 1. Conduct yourself in a responsible manner at all times
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The Scrapbook pages website was established in July 1998. It was established to provide information to people that are interested in history for educational purposes to learn. Scrapbook pages has a variety of sources from Holocaust Museums and Memorial Sites‚ Holocaust Sites which includes Dachau‚ World War II History which includes speeches of Heinrich Himmler and writings of Adolf Hitler and other General Interest such as Anne Frank House Netherlands. Source F comes off the site under “Rudolf Höss
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------------------------------------------------- Definition Esters are chemical compounds consisting of a carbonyl adjacent to an ether linkage. They are derived by reacting an oxo acid with a hydroxyl compound such as an alcohol or phenol. Esters are usually derived from an inorganic acid or organic acid in which at least one -OH (hydroxyl) group is replaced by an -O-alkyl (alkoxy) group‚ and most commonly from carboxylic acids and alcohols. That is‚ esters are formed by condensing an acid with
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Uses of fossil fuel Fossil fuels consist of coal‚ petroleum and natural gas that are found under the earth’s surface‚ formed from billions of years of compression and decomposition of dead plant and animal matter. They are the leading source of energy for the mankind and are used for various purposes like energy for transportation‚ electricity‚ manufacturing process and also used in the manufacturing process of day to day items like plastic. Main fossil fuels are. 1. Coal Coal is
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as bronchitis‚ plurosis occur by long-term exposure to the particulate matter. 5. N02 reacts with hydrocarbons and creates photochemical smog. Reasons for Automobile Pollution The petrol driven vehicles emit invisible gases such as CO and Benzene while diesel driven vehicles emit mainly black smog containing minute carbon particles and S02. The main reasons for vehicular pollution problems are as follows- 1. Poor quality of fuel 2. Outdated vehicles 3. Congestion and mixed traffic
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Primary alcohols undergo oxidation to form carboxylic acids in two stages‚ it forms an aldehyde and then to the acid. In this experiment‚ we are used to prepare benzoic acid from benzene. Potassium permanganate is used this operation as an oxidizing reagent‚ it is used to oxidize the benzoic acid as well as acting as a catalyst for the reaction. Potassium permanganate (KMnO4) is a very strong oxidant which is able to react with many functional groups‚ such as secondary alcohols‚ 1‚2-diols‚ aldehydes
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the Indian rural market. First Indian brands to merit a Harvard Business Review case study Products : Products Consumer Soaps Detergents Edible salt Scouring product Nirma shikakai Nirma shampoo Nirma toothpaste Industrial LAB ( Linear Alkyl Benzene ) AOS ( Alfa Olefin Sulfonate ) Sulfuric Acid Glycerin Soda Ash Pure salt Vacuum Evaporated Iodized Salt SSP- Single Super Phosphate Sodium silicate Soaps : Soaps Nirma Bath Soap Nirma Premium soap Nirma Beauty Soap Nirma Lime Fresh Soap Nima
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