CHEM 208 Lecture Notes - Lecture 5: Sulfur, Liquigas, Surface Tension
20 Sep 2016
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Document Summary
The atmosphere according to altitude, the atmosphere is divided into layers: 1. Major components of air: nitrogen (n2) oxygen (o2) water (h2o) carbon dioxide (co2) Minor components of air: carbon monoxide (co) ozone (o3) oxides of sulfur (sox) oxides of nitrogen (nox) Carbon monoxide: produced where there is insufficient supply of oxigen, incomplete combustion of fossil fuels. When inhaled it binds to hemablobin of red blood cells, reduces the oxygen in body, that causes cell death. Ground level ozone produced during photochemical reactions between volatile organic compounds (vocs) releasd in automobile exhaust and oxides of nitrogen (nox) in the presence of sunlight. Effects on humans: damaged biological tissues and cells, reduced lung function, breathing dificulties, watery eyes. Oxides of sulfur: released during processing (smelting) of minerals ores and the combustion of fossil fuels. Most common source of sulfur dioxide are volcanoes. Oxides of nitrogen: fuel combustion, manuf of nitric acid, welding.
