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  • Form Sun Rays For Combustion And Oxygen
    1,233 words
    Oxygen Oxygen Atomic number 8 Atomic weight 15.9994 Melting point-218.4 oC (-361.1 oF) Boiling point-183.0 oC (-297.4 oF) Density (1 atom, 0 oC) 1.429 g / l Valence 2 electronic con fig. 2-6 or 1's 22's 22 p 4. Oxygen is one of the must important factors that made it possible for life to exist in this planet. Oxygen is also one of the elements must found in earth. Oxygen can be found in in metals, water, and even the one thin that protects us from the powerful sun rays. Oxygen is a very unstable...
  • Atomic Weight Of Oxygen
    818 words
    Oxygen Oxygen, symbol O, colorless, odorless, tasteless, slightly magnetic gaseous element. On earth, oxygen is more abundant than any other element. Oxygen was discovered in 1774 by the British chemist Joseph Priestley and, independently, by the Swedish chemist Carl Wilhelm Schiele; it was shown to bean elemental gas by the French chemist Antoine Laurent Lavoisier in his classic experiments on combustion. Large amounts of oxygen are used in high-temperature welding torches, in which a mixture o...
  • Name Oxygen
    280 words
    Discovery Oxygen was first discovered by two scientists. One was a British Chemist Joseph Priestly who was given credit for the discovery in 1774. The other was a Swedish Chemist Carl Wilhelm Schiele who had also discovered it around the same time as Priestly. Yet Priestly was given credit because his work, and results were published. Priestly had first found this new element when he observed that mercuric oxide, on heating. Yielded a gas that caused a flame to burn faster. He later found that i...
  • Oxygen Content Of Air
    543 words
    Oxygen content of air Objective: To measure the percent of oxygen in air and the percent of oxygen in an exhale of a breath Hypothesis: Air has more oxygen content in it rather than the exhale of a human breath. Procedure: Wash hands to remove oils Obtain 2 samples of steel wool (. 7 g each) Expose one sample of the wool to 35 mL of vinegar solution for 1 minute Remove the wool from the solution and shake it to remove the vinegar Place the steel wool in a syringe. Put the plunger in the syringe ...
  • Ozone In Relation To Oxygen Therapies
    2,345 words
    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 wit...
  • Mg O Mgo When Magnesium And Oxygen
    1,161 words
    'Aim. To find out the empirical formulae for magnesium-oxide Introduction. The empirical formula of a compound tells us the types of atoms present in a compound as well as the simplest whole-number ratio of the different types of atoms. The empirical formula does not tell us the actual number of atoms in the molecule. The mass of Mg + the mass of O 2 = mass of Mg xOx. Knowing the mass of magnesium used and the mass of magnesium oxide produced you can determine the mass of oxygen used. The ratio ...
  • Period 2 Nitrogen
    2,255 words
    Nitrogen This is the story of nitrogen, a significant element, a powerful element, and an often misunderstood or underestimated element. Nitrogen is one of the many elements on the Periodic Table. Like all the rest, nitrogen has its own set of unique properties, compounds, and features. This element plays an important role in modern technology and science. Although the average person may not know it, nitrogen is responsible for many things we take for granted. This element is especially importan...
  • Tank With O 2
    3,905 words
    Mixing Trimix consists of helium, oxygen and nitrogen. Nitrogen is free and pretty much all over the place. Helium and oxygen are available at your local gas supplier. What kind of helium does not matter, just ask for an analysis of the type you have access to, if it is 99.9 percent pure, it does not matter what the designation is. The purpose of this web site is not to get into how to obtain O 2 and He, there are too many regional differences to pigeon-hole this topic. Suffice to say, where the...

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