The Benefits of Nuclear Technology Concerns about the disastrous event in the past make people to look into nuclear technology in a very negative perspective. For example‚ the 1979 partial meltdown of a reactor at Three Mile Island and the Chernobyl disaster in 1986. On that note‚ the most recent international event regarding nuclear technology possession‚ where Iran falls under probation for using nuclear technology for non-peaceful purposes (Iran entitled to use peaceful nuclear technology: EU
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Moles 1.How is molar mass calculated and why is it useful? You have to multiply the atomic weight of each element by the number of atoms that it contains in a compound. Molar mass is useful because its used to change a measurement of mass to an amount of a substance such as the number of particles. 2.Define a mole in chemistry and give 3 examples equivalent units that are used in chemical calculations. A mole measures the amount of a substance. Three examples that are equivalent to a mole is molar
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Non-metals have a high electron affinity · Atom: The basic unity of an element which still retains the elements properties · Atomic number: the unique number of protons in the nucleus of a particular element · Isotope: Atoms of the same element which contain a different number of neutrons · Periodic law: The chemical and physical properties of the elements repeat in a regular‚ periodic pattern when they are arranged according to their atomic number.
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charged particle‚ and thus he is credited with the discovery and identification of the electron; and‚ in a broader sense‚ with the discovery of the first subatomic particle. Thomson is also credited with finding the first evidence for isotopes of a stable (non-radioactive) element in 1913‚ as part of his exploration into the composition of canal rays (positive ions). He invented the mass spectrometer. J.J. Thomson discovered the electron. He found that the electron was a very small‚ negatively charged
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about 7 mSv. Production: Irradiation of the stable oxygen 18 isotope with high energy protons (18 MeV) from a cyclotron. 8O18 + +1p1 ( 9F18 + 0n1. The target is either normal or enriched water. Half life: 109.77 minutes‚ which means that the radioisotope must be transported post haste. Ideally a nuclear medicine facility at a hospital would have its own cyclotron. Uses: Fluorodeoxyglucose: Fluorine is used as a radioactive tracer in PET Scans mostly as Fluorodeoxyglucose (more precisely
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neutrons and protons ATOMIC NUMBER- number of protons in its nucleus MASS NUMBER- the sum of protons and neutrons in the nucleus ATOMIC MASS- the atom’s total mass‚ can be approximated by the mass number ISOTOPES- two atoms of an element that differ in the number of neutrons RADIOACTIVE ISOTOPES- decay
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Christopher Vu Ms. Sieker 80s Literature January 9‚ 2013 Chernobyl: A Modern Disaster Throughout our history as human beings‚ we’ve made amazing discoveries. Whether it is discovering fire or inventing the Internet‚ our minds are able to achieve mind-blowing accomplishments. One of the greatest accomplishments in recent history is nuclear power: the use of nuclear fission to generate heat and electricity. Unlike fossil fuels‚ they do not emit any atmospheric pollutants‚ generate immense
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Components of the Lithosphere -Rigid Outer Layer -Crust and upper mantle -tectonic plates Theory of Plate Tectonics -Theory that Earth’s surface is composed of large‚ thick plates that move and change in size -Combined hypotheses of continental drift and seafloor spreading‚ plus new observations using geophysics superconinents Pangea: super continent -Godwana: (Permian)‚ southern super continent‚ south America‚ Australia‚ new guinea Lavrasia: northern super continent Types of Plate Boundaries
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DIFFERENT TYPES OF ENVIRONMENTAL POLLUTIONS When there are some physical‚ chemical or biological changes occur in our physical environment it is known as pollution and the substances which brings these changes are known as pollutants. The sources for the pollution can be natural or manmade. Following are the types of Environmental pollution. 1. Air pollution 2. Water pollution 3. Soil pollution 4. Noise pollution 5. Marine pollution 6. Thermal pollution
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Question 3 A nuclear power plant (NPP) make used of its nuclear power to generate electricity. The expression “nuclear power” is defined as a controlled release of energy by nuclear fission or nuclear fusion reactions (Nuclear Power‚ 2004‚ p. 2809). The world’s first exposure to nuclear power came with the detonation of two atomic bombs over the Japanese cities of Hiroshima and Nagasaki in 1945 by the army of the United State of America (Nuclear Power‚ 2004‚ p. 2809). At that time‚ scientists believed
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