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Free research papers and essays on topics related to: oxygen

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  • Oxygen - 1,125 words
    Oxygen Oxygen is one of the 92 known elements. An element is a substance that cannot be decomposed into a simpler substance by any simple means. Each of the 92 naturally occurring elements are therefore one of the fundamental materials from which everything in the Universe is made. The History of Oxygen On August 1,1774, Joseph Priestley examined the effect of intense heat on mercuric oxide. He noted that an air or gas was readily expelled from the specimen. To his surprise a candle burned in this with a remarkably vigorous flame. He called this new substance dephlogisticated air, in terms of the current chemical theory of combustion. On a visit to Paris in 1775 he related his discovery dire ...
    Related: oxygen, different ways, organic chemistry, antoine lavoisier, metal
  • Oxygen - 1,067 words
    ... bon dioxide from the blood into the lungs and the breathing out of air), constitutes only one phase of respiration. A second phase of it is the transportation of oxygen by the blood from the lungs to the tissues and of carbon dioxide from the tissues to the lungs. A third phase is the absorption (passage by diffusion) of oxygen into the tissue cells and tissue use of oxygen (the oxidative and other respiratory processes with in the tissues cells whereby energy is liberated). External respiration involves the exchange of gases between the circulation blood and the air. For this exchange to take place, a person needs a large moist surface where air and blood can come in close contact. The ...
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  • None - 262 words
    To investigate the abiotic factors which affect the biodiversity of invertebrate organisms in a series of 6 ponds over a period of 2 months. By Contents Page Abstract Contents page Introduction Hypothesis Method Results Conclusions Limitations Reliability Sources of error Modifications Appendix Bibliography Footnotes Acknowledgements Abstract For this investigation I visited 6 ponds and a spring, at each location I recorded the following data: Temperature Turbidity Colour and appearance of water pH of water Nitrate level of water Ammonia levels of water Oxygen levels of water Number and species of life present in the pond I will use shop brought chemical tests for many of the chemical analys ...
    Related: chemical analysis, abstract, species, pond
  • Willowgreen School District - 1,762 words
    1. Setting - This story took place in the Willowgreen School District, near a fictional town call Bleke in 1933. Characters - The main character of this story is the author, Max Braithwaite, but addition characters in this chapter are Dave McDougall, Mrs. McDougall, and their children Mary, Heather, Myron, and Charles. Antecedent Action - The antecedent action in this chapter is when Max outlines the events leading up to the moment when he left the train at Bleke. Those events included: borrowing money for Max to finish Normal School, the incessant job searching with the eternal job refusals, also when Max started training in motor mechanics and, finally, when Max received a letter from the ...
    Related: district, normal school, school district, king george, george v
  • Downs Syndrome, Turners Syndrome, And Redgreen Color Blindness - 682 words
    1.) Three genetic disorders are Down's syndrome, Turner's syndrome, and Red-green color blindness. They are all caused by undesirable genes inherited by normal genetic mechanisms. These mutations are usually recessive because dominant ones usually die. Turner's Syndrome is caused by faulty cell division known as non disjunction. This occurs when chromosomes fail to separate. IN this disorder, the affected have one "x" chromosome. The effect are an underdeveloped female, mental retardedness, and sterility. Down syndrome is a condition caused by an oddosome that occurs on the pair #21. It results in severe abnormality physical and mental defects. For example, shorter bubble-shape eyes, short f ...
    Related: blindness, down syndrome, downs, cell division, external environment
  • 2001: A Space Odyssey - 1,255 words
    2001: A Space Odyssey The concept of space travel has been an interest to many since the beginning of time. Today, scientists are moving at a comfortable pace to expand our vast knowledge of the universe. Many authors dreamed of the possibilities while scientists tried to bring them to reality. The book "2001: A Space Odyssey," written by Arthur C. Clarke in the 1960's, proposed ideas about advanced space travel that took place in a time period only two years from now; however, at the current rate of the space program, mankind is nowhere near the technology showed by the book. Clarke uses concepts of space travel that can still only be dreamed of today. Clarke, an author of the sixties, had ...
    Related: odyssey, outer space, space odyssey, space program, space shuttle, space technology, space travel
  • 2061 A Space Odyssey Three - 420 words
    2061 A Space Odyssey Three Dr. Heywood Floyd was sitting in the space station Pasture when he saw Haleys comet and decided to actually land on the surface (by convincing Tsung Corporation that it would be good advertising). So off go Dr.Floyd, Dr.Chant, Clifford Greenberg and the Universes crew to Haleys comet. Dr.Rolf van der Berg was called to his office at 5:00 in the morning to find that on Europa There was a new mountain three times the size of Everest had appeared and that a thousand kilometers away from the mountain a monolith about five hundred kilometers wide and a thousand two hundred kilometers long. When Universe landed The passengers were allowed on to the surface but only if th ...
    Related: odyssey, space odyssey, space station, went wrong, rolf
  • 51000 - 994 words
    5/10/00 Globalization and Ideal Landscapes Globalization is a broad term that has several meanings to different factions, cultural Groups and nations. For our purposes globalization refers to the loss of time and space through the rapid development of technologies. It also refers to a world in which all nations and peoples are directly or indirectly connected through the international economy and world politics. This rapid trend toward a globalized world has seen supporters from both the first world financial sectors and the mass producing agricultural sector. Its main detractors have been environmentalists and the indigenous peoples who are adversely affected by the encroaching nature of gl ...
    Related: point of view, computers and the internet, indigenous people, landscape, supporters
  • A Brave New World Aldous Huxley 81932, 1946 Aldous Huxley Harpercollins Publishers Ltd Ny,ny 10022 - 1,168 words
    A Brave New World. Aldous Huxley. 81932, 1946 Aldous Huxley. HarperCollins Publishers Ltd. NY,NY. 10022 . P 1 AA squat grey building of only thirty-four stories. Over the main entrance the words, CENTRAL LONDON HATCHERY AND CONDITIONING CENTRE, and, in a shield, the World State=s motto, COMMUNITY, IDENTITY, STABILITY.@ Here is a document I found on the web which helped me (embedded as an OLE object) : P 13 ANothing like oxygen-shortage for keeping an embryo below par.@ AThe lower the caste . . . the shorter the oxygen.@ P 19 AThey hurried out of the room and returned in a minute or two, each pushing a kind of tall dumb-waiter laden, on all its four wire-netted shelves, with eight-month-old b ...
    Related: aldous, aldous huxley, brave, brave new world, huxley, world aldous huxley, world state
  • A Galaxy - 540 words
    A Galaxy A Galaxy: Characteristics, Contents and Types Galaxies are huge and contain billions of stars. They contain all of the stars of the Herzspring-Russell diagram, open cluster, emission, nubula, reflection nubula, nova remnants and supernova remnants. We have three different and distinct types of galaxies, which are spiral galaxies, eluptical galaxies, and last but not least irregular galaxies. The Milky Way galaxy, which is a representative of a spiral galaxy, is basically lens-shaped. Its circumference is about 120,000 light years across. On a dark summer night, we are able to see a few of the Milky Way's arm. The Milky Way, as all spiral galaxies, rotates on its axis. However, it do ...
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  • A Introduction - 1,026 words
    A. Introduction During the last twenty years, industrial livestock farms have been replacing the traditional family size farms that once raised most of the nations swine. The number of livestock animals produced in the United States has grown modestly in the past two decades, but the number of farms raising them has slunk dramatically because large producer now dominate the market. The large increase in industry farming has led to large quantities of manure. B. Problem Definition The over abundance of manure has become a problem that leads to problem with Pollution, heated debates between the industries and societies (people of the community), ways to try and find solutions for the pollution ...
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  • A Vogadro Was Born On June 9, 1776 In Turin, Italy He Began His Career In 1796 By Obtaining A Doctorate In Law And Practicing - 596 words
    A vogadro was born on June 9, 1776 in Turin, Italy. He began his career in 1796 by obtaining a doctorate in law and practicing as a lawyer for three years after. In 1800, he began to take private lessons in mathematics and physics and decided to make the natural sciences his profession. He was appointed as a demonstrator at the Academy of Turin in1806 and the Professor of Natural Philosophy at the College of Vercelli in 1809, and in 1820, he was appointed the professor of mathematical physics. He was a physics professor but he also experimented in chemistry using mathematics to base most of his findings. Avogadro is well known for his hypothesis known as Avogadro's Law. His law states that a ...
    Related: doctorate, italy, obtaining, practicing, robert brown
  • Abortion - 1,868 words
    Abortion "You wake up in the morning and find yourself back to back in bed with an unconscious violinist. A famous unconscious violinist. He has been found to have a fatal kidney ailment, and the Society of Music Lovers have canvassed all the available medical records and found that you alone have the right blood type to help. They have therefore kidnapped you, and last night the violinist's circulatory system was plugged into yours, so that your kidneys can be used to extract poisons from his blood as well as your own. The director of the hospital now tells you, 'Look, we're sorry the Society of Music Lovers did this to you-we would never have permitted it if we had known. But still, they d ...
    Related: abortion, healthy people, cesarean section, natural environment, suppose
  • Acid Precipitation - 663 words
    Acid Precipitation Acid Precipitation Our atmosphere functions as living ecosystem of chemical reactions. Through the help of the water cycle, chemicals pass through the atmosphere and are eventually taken up by the soil, surface water, or organic materials. Human beings have added enormously to the atmospheric burden of many toxic substances. The most prominent evidence of this is the presence of acid rain: precipitation and particles that have been made acidic by air pollution. Acid rain is a direct consequence of the atmosphere's self-cleansing process. The tiny droplets of water that make up clouds continuously capture suspended particles and soluble trace gases. Not all trace gases can ...
    Related: acid, acid rain, precipitation, air pollution, power plants
  • Acid Rain - 1,013 words
    Acid Rain Acid Rain (The Environmental Effects) My first question is , What is Acid Rain? You hear about it all the time in the news and it is very important to the earths ecosystem. In simple terms, acid rain is rain that is more acidic than normal. All objects in nature have a certain level of acicicity but acid rain has too much acid in it. Acid rain is a complicated problem, caused by air pollution. Acid rain's spread and damage involves weather, chemistry, soil, and the life cycles of plants and animals on the land and from acid rain in the water. Acidity is measured using a pH scale, with the number 7 being neutral. Therefore, a body with a pH value of less than 7 is acidic. On the oth ...
    Related: acid, acid rain, rain, air pollution, new england
  • Acid Rain - 999 words
    ... an affect the fish in the water in two ways: directly and indirectly. Sulfuric acid directly interferes with the fish's ability to take in salt, oxygen and nutrients crucial for daily life. Osmoregulation is the process of maintaining the delicate balance of salts and minerals in their tissues. For freshwater fish, maintaining osmoregulation is key in their survival. Acid molecules, which are a result of acid rain in the water, cause mucus to form in the fishs gills. This in return prevents the fish from absorbing oxygen. If the fish are unable to absorb oxygen, the consequence could be the eventual suffocation of fish and the low pH could throw off the balance of salts in the fish tissu ...
    Related: acid, acid rain, rain, new media, modern society
  • Acid Rain - 995 words
    ... ish in the water in two ways: directly and indirectly. Sulfuric acid directly interferes with the fish's ability to take in salt, oxygen and nutrients crucial for daily life. Osmoregulation is the process of maintaining the delicate balance of salts and minerals in their tissues. For freshwater fish, maintaining osmoregulation is key in their survival. Acid molecules, which are a result of acid rain in the water, cause mucus to form in the fishs gills. This in return prevents the fish from absorbing oxygen. If the fish are unable to absorb oxygen, the consequence could be the eventual suffocation of fish and the low pH could throw off the balance of salts in the fish tissue. Salt levels ...
    Related: acid, acid rain, rain, modern society, staying alive
  • Acid Rain - 1,289 words
    Acid Rain Pollution comes in various forms. Whether its toxic waste, CFCs, or sewage, they are all hazardous, to the earth. These can deplete the earth and its inhabitants of resources, causing a harmful change. A product of pollution is acid rain. We shall see that acidification is harmful to all forms of life. Acid rain is any form of precipitation that is polluted by sulphur dioxide (SO2), and nitrogen oxides (NOX). This acid precipitation can be in the form of rain, snow, sleet, fog, or cloud vapors. The acidity of substances dissolved in water are measured by their pH levels. Normal precipitation pH levels fall between 5.0-5.6.2 When levels fall below these numbers, then the precipitati ...
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  • Acid Rain - 1,774 words
    Acid Rain What is acid rain? Acid rain is the term for pollution caused when sulfur and nitrogen dioxides combine with atmospheric moisture. The term 'acid rain' is slightly misleading, and would be more accurate if deemed 'enhanced acid rain', as rain occurs acidic naturally. Acidity is measured on what is know as the pH scale. Fourteen is the most basic, seven is the most neutral, and zero is the most acidic. Pure rain has a pH level of 7, which is exactly neutral. The acidity of rain is determined by the pH of pure water in reaction with atmospheric concentrations of carbon dioxide, resulting in carbonic acid. These particles partly dissociate to produce hydrogen ions and bicarbonate ions ...
    Related: acid, acid rain, rain, electric utilities, major change
  • Acid Rain - 1,731 words
    Acid Rain Introduction: What Causes Acid Rain? One of the main causes of acid rain is sulfur dioxide. Natural sources, which emit this gas, are Volcanoes, sea spray, rotting vegetation and plankton. However, the burning of fossil fuels, such as Coal and oil, are largely to be blamed for approximately half of the emissions of this gas in the world. When sulfur dioxide reaches the atmosphere, it oxidizes to first form a sulfate ion. It then Becomes sulfuric acid as it joins with hydrogen atoms in the air and falls back down to earth. Oxidation occurs the most in clouds and especially in heavily polluted air where other compounds such as ammonia and ozone help to catalyze the reaction, changing ...
    Related: acid, acid rain, rain, case study, ohio river
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