‘Little Boy’ contained more than 9‚000-pound uranium-235 bomb was loaded aboard a modified B-29 bomber christened Enola Gay. It exploded 2‚000 feet above Hiroshima in a blast equal to 12-15‚000 tons of TNT‚ which is a high explosive formed from toluene by substitution of three hydrogen atoms with nitro groups‚ destroying approximately 12.9499 square kilometres or five square miles of the city. The atomic bomb used on Nagasaki was a lot more powerful than the one used on Hiroshima‚ weighing nearly
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Crude Oil Effect on soil quality: • Oil contaminated soil looses its fertility for more than 20 years. • The texture and other physicochemical characteristics of the soil gets affected. • The mites and other insects can’t survive in oil contaminated land leading to major imbalance in the food chain. • Oil contamination has adverse effect on seed germination. Farmers loose its crops and are not able to grow agricultural crops for years after years. • Effect on economy of the farmers.
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Bibliography: Arata‚ K.‚ Nakamura‚ H.‚ & Shouji‚ M. (2000). Friedel–Crafts acylation of toluene catalyzed by solid superacids. Applied Catalysis A: Genera ‚ 197 (2)‚ 213-219. Lefevre. (1998). Organic Chemsitry II Laboraty Manual (1st Edition ed.). palmyra: H. A. Neidig . McMurry‚ J. Organic Chemistry (7th Edition ed.). Belmont : Brooks/Cole
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specifically dealing with availability of non-toxic cleaning agents. They found that “common cleaning products such as furniture polish‚ carpet cleaner‚ spot remover‚ air fresheners‚ disinfectants and bleach can contain hazardous compounds such as toluene‚ naphthalene‚ … and xylene. These and other hazardous ingredients found in many cleaning products are associated with human health concerns including cancer‚ reproductive disorders‚ respiratory ailments‚ and eye or skin irritation.” Kimpton’s research
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UNIVERSITI TUNKU ABDUL RAHMAN |Faculty |: |Faculty of Engineering & Science | |Unit Code |: |UEMK1013 | |Course |: |Chemical Engineering | |Unit Title |: |Chemistry for Engineering | |Year/ Semester |: |Year 1/ Trimester 1 | |Lecturer |: |Dr. Loh Han Chern
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Inhalants "Inhalants are volatile substances that produce chemical vapors that can be inhaled to induce a psychoactive‚ or mind-altering‚ effect. “http://www.drugabuse.gov/publications/research-reports/inhalant -abuse/what-are-inhalants” Inhalants are not natural‚ they are man made in factories. There are four main types of inhalants which are volatile solvents‚ gases‚ aerosols‚ and nitrites. Some examples of these are household products such as glue‚ paint thinner‚ and aerosol cans. Inhalants
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I do not own anything. Air Pollution What is Air Pollution? Air Pollution is the introduction of chemicals‚ particulate matter‚ or biological materials that cause harm or discomfort to humans or other living organisms‚ or damages the natural environment into the atmosphere. What is Atmosphere? The atmosphere is the complex dynamic natural gaseous system that is essential to support life on planet Earth. Stratospheric ozone depletion due to air pollution has long been recognized as a threat to
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Practical 1 Title: Tissue Processing Aim: To examine human cell and tissue under the microscope Introduction: Tissues from the body taken for analysis of diseases must be processed in the histology laboratory to produce microscopic slides that are viewed under the microscope. These tissues are usually fixed into paraffin. Microscopic analysis of cells and tissues requires the preparation of very thin‚ high quality sections mounted on glass slides and properly stained to demonstrate normal and abnormal
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fumes‚ at higher environmental temperatures‚ will result in quicker death. Gasoline is obtained from petroleum in oil refineries‚ and used as fuel in combustion engines. It is made of over 250 types of hydrocarbons. Aromatic hydrocarbons like toluene and benzene are used to increase the octane rating of gasoline. Other additives are also added to improve engine performance and reduce the emission of harmful gasses formed as byproducts of the combustion process. Some hydrocarbons found in gasoline
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Lab 3: Solubility of Organic Compounds Objectives: Understanding the relative solubility of organic compounds in various solvents. Exploration of the effect of polar groups on a nonpolar hydrocarbon skeleton. Introduction: The solubility of a solute (a dissolved substance) in a solvent (the dissolving medium) is the most important chemical principle underlying three major techniques you will study in the organic chemistry laboratory: crystallization‚ extraction‚ and chromatography.
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