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Free research essays on topics related to: chemist

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  • Jim Crow Cash Crop
    1,183 words
    ... from hemp (8). Hempseed oil can also be used for lighting, and was at one time, the most popular fuel of choice for this purpose. Futuristic US citizens, such as Henry Ford, envisioned a nation powered by organic, renewal Bio Mass Energy derived from hemp. Its demise was realized as the large monopolies were negotiating their rise to power (8). So how did this gift from God, this plant that served as legal currency become illegal? Why? Many factors came together, which eventually ended up ya...
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  • Waukegan Harbor Ashworth Points Pcb
    571 words
    What Really is at the Bottom of our Lakes In the article Sludge William Ashworth points out that with the success of economic growth, the cost is often the environment. This is most evident in our lakes and rivers, which have served as a dumping ground whether we realized it or not. This has caused environmental problems, health problems, and toxins we can not dispose of properly. 9 Ashworth has many different cases in which to support this article. The citizens of Waukegan, Illinois, for exampl...
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  • Janis Joplin Port Arthur
    1,324 words
    Blues legend Janis Lyn Joplin was born on January 19 th 1943, the eldest child of parents Seth and Dorothy Joplin. Janis was born and raised in the small Southern petroleum industry town of Port Arthur, Texas. Her father was a canning factory worker, her mother a registrar at a local business college. Her non-abbe rational upbringing coupled with the atmosphere of Port Arthur at the time; generally restrictive, intolerant, and un nurturing must " ve made even Janis' early childhood difficult. By...
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  • Nitrous Oxide Neuromuscular Junction
    1,553 words
    Anesthesia is a partial or complete loss of sensation or feeling induced by the admin- is tration of various substances. For many decade, people have used one form of an anesthetic during surgical procedures. Some people also use some of these anesthetics as recreational drugs, e. g. laughing gas (a. k. a. Nitrous Oxide). The term anesthetic literally means "without feeling." There are many different types of anesthesia, but they are usually put into three groups. These groups are gene- ral anes...
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  • Atomic Mass Mass Spectrometer
    455 words
    The moles beginning is traced back to the most basic units of matter, atoms. Since atoms are extremely small, scientists have perplexed a great deal over finding a way to measure atomic mass. They struggled to find a universal container that had the capability to mass atoms. Measuring the mass of one atom on a balance in grams is not practical, because the result in grams is an amount too small to be of any use in the laboratory. Fortunately, a new idea came about. If two or more same amounts of...
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  • Sodium Chloride Earth Crust
    745 words
    Sodium has an atomic number of 11 and a mass of about 23 g. It is a silvery white-metallic element classified under the alkali metals. Sodium has been known since early times and was used by the people of Mesopotamia and Egypt to make glasses. Sodium is the sixth most common element found on the earth. It is usually not found in nature but more often in compounds such as salt (NaCl). Sodium conducts heat and electricity easily. Without this element life could not exist. Each compound is used for...
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  • Nitrous Oxide Liquid Nitrogen
    551 words
    Nitrogen was isolated by the British physician Daniel Rutherford in 1772 and recognized as an elemental gas by the French chemist Antoine Laurent Lavoisier about 1776. Properties Nitrogen is a colorless, odorless, tasteless, nontoxic gas. It can be condensed into a colorless liquid, which can in turn be compressed into a colorless, crystalline solid. Nitrogen exists in two natural forms of isotopes, and four radioactive isotopes have been artificially prepared. Nitrogen melts at - 210. 01 C (- 3...
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  • Aluminium Versus Aluminum Why A Difference In Spelling
    504 words
    The metal was named by the English chemist Sir Humphry Davy, even though he was unable to isolate it: that took another two decades work by others. He derived the name from the mineral called alumina, which itself had only been named in English by the chemist Joseph Black in 1790. Black took it from the French, who had based it on alum, a white mineral that had been used since ancient times for dyeing and tanning, among other things. Chemically, this is potassium aluminium sulphate (a name which...
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  • Liquid Hydrogen Natural Gas
    725 words
    Helium (Greek helios, "sun"), symbol He, inert, colorless, odorless gas element. In group 18 of the periodic table, helium is one of the noble gases. The atomic number of helium is 2. Pierre Janssen discovered helium in the spectrum of the corona of the sun during an eclipse in 1868. Shortly after it was identified as an element and named by the chemist Sir Edward Franklin and the British astronomer Sir Joseph Norman Lockyer. The gas was first isolated from terrestrial sources in 1895 by the Bri...
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  • Earth Crust P 64
    487 words
    My element was Thallium. It is atomic number 81. It has 81 protons and electrons and 123 neutrons. Thallium has a mass of 204. 3833 atomic mass units. Its symbol is Tl. It resides in Group IIIA of the periodic table. That is the aluminum family. Thallium has a bluish color after exposure to the air. It is a very soft and malleable metal. It has an electron configuration of 1 s 22 s 23 s 23 p 64 s 23 d 104 p 65 s 24 d 105 p 64 f 145 d 106 s 26 p 1. It has 6 electron shells. It melts at 576. 7 K a...
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  • Janis Joplin Port Arthur
    1,318 words
    Blues legend Janis Lyn Joplin was born on January 19 th 1943, the eldest child of parents Seth and Dorothy Joplin. Janis was born and raised in the small Southern petroleum industry town of Port Arthur, Texas. Her father was a canning factory worker, her mother a registrar at a local business college. Her non-abbe rational upbringing coupled with the atmosphere of Port Arthur at the time; generally restrictive, intolerant, and un nurturing mustve made even Janis early childhood difficult. By all...
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  • Naturally Occurring Million Years
    630 words
    Chlorine, symbol Cl, is a greenish-yellow gaseous element. In group 17 of the periodic table, chlorine is one of the halogens. The atomic number of chlorine is 17. Chlorine is a greenish yellow gas, which combines directly with nearly all elements. It is a gas at normal temperature and pressure, but because it is highly reactive it is not found as a gas in nature. Instead, it appears as naturally occurring organochlorine compounds and salts. It is commonly found as NaCl (solid or seawater). The ...
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  • Periodic Table Atomic Number
    299 words
    Dmitry Ivanovich Mendeleyev (1834 - 1907) Dmitry Ivanovich Mendeleyev was Russian chemist, known for his development of the periodic table of elements. This is a table created to arrange the elements by their atomic number. Mendeleyev was born in Tobolsk, Siberia. He studied chemistry at the University of Saint Petersburg, until 1859 when he was sent to learn at the University of Heidelberg. Where he became aquatinted with the Italian chemist Stanislao Cannizzaro, whose views on atomic weight ch...
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  • H 2 O Hydrogen Gas
    635 words
    Hydrogen is the Hydrogen Hydrogen Hydrogen is the lightest element. It is by far the most abundant element in the universe and makes up about about 90 % of the universe by weight. Hydrogen as water (H 2 O) is absolutely essential to life and it is present in all organic compounds. Hydrogen gas was used in lighter-than-air balloons for transport but is far too dangerous because of the fire risk (Hindenburg). commercial fixation of nitrogen from the air in the Haber ammonia process hydrogenation o...
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  • Kurt Vonnegut Jr Three Main Characters
    2,074 words
    Kurt Vonnegut, Jr. is a contemporary American author whose works have been described by Richard Giannone as comic masks covering the tragic farce that is our contemporary life (Draper, 3784). Vonnegut's life has had a number of significant influences on his works. Influences from his personal philosophy, his life and experiences, and his family are evident elements in his works. Among his comic masks are three novels: Cats Cradle, The Sirens of Titan, and God Bless You, Mr. Rosewater. Throughout...
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  • Computers In Chemistry Large Companies Data
    793 words
    The Role of Computers in Chemistry Over the last few decades, the technology of computers has improved in leaps and bounds. Computers have become faster and easier to use, taking milliseconds to do the calculations which once had to be done by hand. There are several areas of chemistry where computers have played a significant role, a few of them I will discuss. In synthetic chemistry it is very important to know what compounds you have created. Chemists rely on spectroscopic techniques to analy...
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  • Oxygen Was First Earths Crust Found
    275 words
    Oxygen was first Oxygen 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 Schedule 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 fast...
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  • Copyright C 1994 Middle Ages
    869 words
    Science Alchemy Alchemy, ancient art practiced especially in the Middle Ages, devoted chiefly to discovering a substance that would transmute the more common metals into gold or silver and to finding a means of indefinitely prolonging human life. Although its purposes and techniques were dubious and often illusory, alchemy was in many ways the predecessor of modern science, especially the science of chemistry. The birthplace of alchemy was ancient Egypt, where, in Alexandria, it began to flouris...
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  • Nobel Prizes Gun Powder
    1,531 words
    Alfred Nobel was born in Stockholm, Sweden on October 21, 1833. (Encarta) His father Immanuel Nobel was an engineer and inventor who built bridges and buildings in Stockholm. In connection with his construction work Immanuel Nobel also experimented with different techniques of blasting rock. Alfred's mother, Andrietta Ahlsell came from a wealthy family. Due to misfortunes in the construction work caused by the loss of some barges of building material, Immanuel Nobel was forced into bankruptcy th...
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  • Nobel Prize In Chemistry Prize In Chemistry Arrhenius
    950 words
    Svante August Arrhenius was born at Uppalsa, Sweden, on February 19, 1859 His intelligence and creativity were apparent nt from an early age taught himself to read when he was three Although credit ted with many scientific innovations, he remains best known for his ionic theory of solutions, For which he was awarded the Nobel Prize in chemistry in 1903 Arrhenius heirs died in Stockholm on October 2, 1927 Science is a human endeavor subject to human frailties and governed by personalities, politi...
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