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Three Minutes Half Life
528 wordsThere are 109 known elements, and of those, 19 of them are artificially produced or synthetic. A synthetic element is made by bombarding atomic nuclei with neutrons or other particles. The element Lawrencium has been made in this manner. While scientists continue to work to create more elements, it should be noted that most synthetic elements are so unstable, that they are of theoretical value only, and have no known practical uses. This element was discovered at the Lawrence Radiation Laborator...
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Prize For Chemistry In 1934 Urey Was Awarded Deuterium
326 wordsHarold Clayton Urey was a scientist whose discovery of deuterium helped him win the Nobel Peace Prize for Chemistry in 1934. He also made fundamental contributions to the production of the atomic bomb through his development of the isotope separation processes for the Manhattan Project. Harold Urey was born in Walkerton, Indiana, on April 29, 1893. His early school tool place in rural Indiana. He entered the University of Montana in 1914 and received his Bachelors of Science degree in Zoology in...
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Coal And Coke Diamond And Graphite Carbon
448 wordsCARBON AND HOW IT EFFECT OUR LIVES Although widely distributed in nature, carbon is not particularly plentiful (it makes up only about 0. 025 percent of the Earth's crust). Yet it forms more compounds than all the other elements combined. In 1961 the isotope carbon- 12 was selected to replace oxygen as the standard relative to which the atomic weights of all the other elements are measured; carbon- 14, which is radioactive, is the isotope used in radiocarbon dating and radio labeling. Elemental ...
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August 6 1945 000 Tons Of Tnt
1,572 wordsThe Manhattan Project was the code name of the U. S. 's attempt to construct an atomic bomb during World War II. It was named after the Manhattan Engineer District of the U. S. Army Corps of Engineers, because a lot of it's earlier research was done in New York City. An atomic bomb is a weapon that uses the energy from a nuclear reaction called Fission for its destruction. The idea that mass could be changed into energy was predicted by Albert Einstein in the earlier part of the 1900 's. John D....
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Million Years Ago Gulf Of Mexico
1,898 wordsIntroduction What is the oceans role in climate? The oceans play a vital and pivotal role in the distribution of life sustaining water throughout our planet. 86 % of the evaporation that occurs on earth is over the oceans. The oceans are the planets largest reservoir of water transferring huge amounts of water around the hydrological cycle. In fact the oceans dominate the hydrological cycle, for they contain 97 % of the global water inventory. The hydrological cycle can be disrupted by changes i...
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Atomic Bomb Atomic Weapon
1,484 wordsThe atom bomb is one of the most important discoveries in modern day science. Countless scientists worked relentlessly on the project and their efforts opened the door for present and future exploration of the atom. Just before the beginning of World War II, Albert Einstein wrote a letter to President Franklin D. Roosevelt. Urged by Hungarian-born physicists Leo Szilard, Eugene Winner, and Edward Teller, Einstein told Roosevelt about Nazi German efforts to purify Uranium- 235 which might be used...
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Nuclear Power Plants Coal And Oil
1,171 wordsAbstract: Should we begin to manufacture one of the most destructive and infamous substances on the face on the Earth once again? The engineers say yes, but the public says no. The United States stopped making this element with the ban on manufacturing nuclear weapons. But with the continuing problem with our ever diminishing energy sources, some want us to begin using more nuclear energy and less energy from natural resources. This paper is going to discuss what plutonium is, the advantages and...
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Nitrous Oxide Liquid Nitrogen
551 wordsNitrogen 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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Amount Of Pressure Arc Lamps Xenon
349 wordsXenon is a rare, colorless, odorless, tasteless, chemically un reactive gas. It is one of the inert gas elements found in group 0 of the periodic table. Xenon was long considered incapable of chemical reaction, but in 1962 Neil Bartlett, a Canadian chemist, reported synthesis of xenon hexafluoroplatinate, Xe PtF 6, a true compound. Before 1962, people thought that xenon and other noble gases were unable to form compounds. Now, xenon's reported compounds are sodium permeate, xenon deutetrate, xen...
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Atomic Weight Large Quantities
608 wordsAtomic Number: 8 Atomic Radius: 66 pm Atomic Symbol: O Melting Point: - 218. 79 C Atomic Weight: 15. 9994 Boiling Point: - 182. 95 C Electron Configuration: [He] 2 s 22 p 4 Oxidation States: - 2 History (Gr. oxy's: acid, and genes: forming) For many centuries, workers occasionally realized air was composed of more than one component. The behavior of oxygen and nitrogen as components of air led to the advancement of the phlogiston theory of combustion, which captured the minds of chemists for a c...
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Relative Geologic Age Dating Geologic Age Dating Fault
606 wordsWhen stress caused by friction produced by the Earths movements and the natural rigidity of the rock builds up in rocks and reached a level that is over the strain threshold, the energy released resulted into a fault. The compressional fault, also known as reverse fault has the hanging wall moving up relative to the foot wall. The movement will expose the older rocks on the hanging wall at the surface. On the other hand, when the hanging wall moves down relative to the foot wall it is called a t...
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Big Bang Theory Miles Per Second
2,170 wordsBig Bang Cosmology Introduction to Big Bang Theory Einstein came up with The Big Bang Theory with the intention of creating a model of the universe in which both his General Theory of relativity worked and the rest of the universe still worked. He based his theory on a fairly uniform distribution of mass throughout the universe. His Big Bang Theory was able to fix the peculiar way that Mercury Orbited the Sun and it was able to fix the way the Sun bent light. These were the first problems that i...
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Nitric Acid Scientific American
825 wordsChemistry Connections of nitrogen - saltpeter, nitric acid, ammonia - were known long before invention of nitrogen in a free condition. In 1772 D. Rutherford, burning phosphorus and other substances in a glass bell, has shown that the gas remaining after combustion does not support breath and burning. He named it suffocating air. In 1787 A. Lavoisier has established, that the "vital" and "suffocating" gases included in air, are simple substances, and has offered the name "nitrogen." In 1784 G. C...
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Source Of Energy Due To The Fact
2,196 wordsOver the past four or five decades, and especially in recent years, there has been a lot of talk among the scientific community and in everyday life about the development of nuclear fusion as an energy source. It seems that the everyday person has some sort of fairy tale image of fusion power in the back of their head. When they hear about dwindling un renewable resources such as coal, oil, and natural gas, they just sort of file it away with the hope that fusion power will come flying down with...
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Atomic Mass Energy Level
283 wordsWhat is an element: Simple substances that can not be broken down into simpler substances. What is an atom: smallest part of an element that can be identified as an element. How do you right a chemical symbol: If it is one letter capitalize it, if there are two letters capitalize the first letter but not the second. Malleable- metals that can be hammered into thin sheets like aluminum foil. Ductile- metals that can be drawn into wire. Luster- shine Brittle-breaks easily Who stated the atomic the...
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Fission Of Uranium Radioactive Isotopes Gas
592 wordsI am the chemical element known as Krypton. I can also be referred as Kr. I will be telling you about my history, my properties, my family and my occurrence. I will also be telling you about my uses and ores, also the analytical methods based on me. I received the name krypton from the Greek word " hidden" because I was hiding for so long, undetected. I am from a rare group of gases called noble gases. The other noble gases are helium, xenon, neon, argon and radon. I was discovered in ...
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Genetic Drift Antibiotic Resistance
920 wordsEssay on Evolution There are many mechanisms that lead to evolutionary change. One of the most important mechanism in evolution is natural selection which is the differential success in the reproduction of different phenotypes resulting from the interaction of organisms with their environment. Natural selection occurs when a environment makes a individual adapt to that certain environment by variations that arise by mutation and genetic recombination. Also it favors certain traits in a individua...
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Source Of Energy Nuclear Fusion
519 words&# 65279; Energy From Nuclear Fusion Nuclear Fusion is the energy-producing process which takes place continuously in the sun and stars. In the core of the sun at temperatures of 10 - 15 million degrees Celsius, Hydrogen is converted to Helium providing enough energy for us to sustain life on earth. For energy production on earth, different fusion reactions are involved. The most suitable reaction occurs between the nuclei of the two light forms (isotopes) of Hydrogen Deuterium and Tritium; even...
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Period Of Time Atomic Bomb
951 wordsTHE ATOMIC BOMB Seven months after the discovery of the neutron, on September 12, 1932, Leo Szilard inaugurated the possibility of a controlled release of atomic power through a multiplying neutron chain reaction. Leo was legally recognized as the inventor of the atomic bomb on July 4, 1934. He described not only the basic concept of using neutron induced chain reactions to create explosions, but also the key concept of the critical mass. There are 2 types of atomic explosions, one in which two ...
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Paleo Ecological Reconstruction Paleo Ecological Evidence Organisms
1,100 wordsOne of the principal objectives of geologists studying sedimentary rocks is the reconstruction of the environment in which the rocks were deposited. Correct reconstruction may result in the discovery of oilfields, deposits of salts, or base metals, and provide insight to our earths past. As evidence to ancient environments the geologist has the structures, textures, and composition of the grains that make up the sediments, and the fossils preserved in them. Organisms are far more sensitive to, a...
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