Oxides

when there is there is dilation of blood vessels, which decreases blood pressure. This is also known as vasodilation. Thus, the blood vessels relax and widens enabling greater blood flow or the tissue allows greater perfusion by the use of nitric oxide. Hypoxemia which is also known as low oxygen level can affect the brain, liver, and other organs can…

changed the mixture of gases in our atmosphere, hence resulting in a dramatic increase of acid rain levels. Pollution and burning of fossil fuels are the main causes for acid rain. These human activities cause the release of compounds such as nitrogen oxide and sulfur dioxide…

Alice Hamilton that lead was not used in any of their products because of the dangers it can cause to the human body. After further investigation Hamilton found that six, not just one, Polish printers released lead into the air, in the form of red oxide, everytime it sprayed paint. This shows that companies now days lie to their employees and do not care about the well being of the people who make our products. Let me tell you a story that Hamilton once wrote about. It’s about an Italian who…

While smog continues to affect the life of every person in Los Angeles, the majority of the population knows little about it. The simplest way to explain smog is that it forms in a photochemical reaction which means car-exhaust emissions like nitrogen oxide combine with sunlight to create a pollutant. In a city of millions-like Los Angeles where nearly every person drives a car, smog builds up quickly. In addition to the car-emissions, smog also forms in Los Angeles as a result of the industrial…

simply quit or limit air pollution. This idea may be very simple, but requires great efforts because some developed countries have become so dependent on the combustion of hydrocarbons as an energy source. By limiting pollution such as sulfur oxides, nitrogen oxides, and carbon dioxide, acids would not be able to form within the atmosphere to create acidic solutions. The cut-off of air pollution would also solve other environmental problems. The solution seems to be to turn to renewable sources…

takes place at 100 degrees centigrade and is more sensitive to relative humidity (RH) than to the temperature. Film thickness increases with increase in RH and forms Ni(OH)2 at the surface of NiO film with creation of vacancies in the surface of the oxide. NiP alloys are used as a material for electrical contacts and for metal interconnects. A passivating film is formed at temperature up to 200 degrees centigrade and with thickness ranging from 0.6nm to 1.5nm. Based on study using Auger electron…

Almost $200 billion is used for fixing and preventing the damage done by corrosion each year in the United States. The process of corrosion costs important money and resources. Iron and steel are the most important resources that corrode. About 20% of the steel and iron produced in the United States is used to repair bridges or pipelines that have suffered from the effects of corrosion. Corrosion occurs when metals, through chemical reactions, are broken down (“Corrosion,” 2008, paras. 1-2). The…

Chemistry is the study of atoms. Chemical scientists study what atoms are made of and how they connect. Atoms are the building blocks of matter. Atoms are made up of protons, neutrons and electrons. It was John Dalton who put forward his ideas and theories about atoms at the beginning of the 19th century: Dalton proposed that atoms were like tiny, hard balls (Absorb Learning, 2008). Then at the end of the 19th century JJ Thompson discovered the electron through an experiment. When JJ Thompson…

teachers had just begun to introduce the topic of greenhouse gasses, and according to Dan no one had really believed that subject matter due to the topic being so foreign and new. Greenhouse gases are made up of, carbon dioxide, methane, nitrous oxide, and a few varying gasses. If we can find ways to sustainably reduce or manage greenhouse gases, global temperatures would halt for a while; this is because once greenhouse gasses are put into the atmosphere they never leave, and the temperatures…

metal, which chemically resembles arsenic or antimony. Bismuth is the most naturally diamagnetic element and has one of the lowest values of thermal conductivity among metals. [27] Bismuth is a brittle metal with a white hue, however, an iridescent oxide may form on the surface showing many colors from yellow to blue. Bismuth has a spiral…