electron here +10e = +10β= positron 10n = neutron As a result of beta decay‚ the product nucleus is Answer one atomic number lower than the original element. two atomic number higher than the original element. here one atomic number higher than the original element. two atomic number lower than the original element. What is X for the nuclear reaction: 21284Po à 20882Pb + X Answer 42p 1-1β here 42α 11n Which statement is not correct for the nuclear
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the effective operation and good management of a police department; (2) planning is the essential element of decision –making; (3) effective planning can eliminate or reduce potential catastrophe resulting from manmade and natural disasters; (4) decision making can usually be described in three types of theoretical models rational‚ incremental‚ and heuristic none of which defines all of the elements and factors that affect every decision; (5) the decisions individuals make during crisis situations
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and analyzation of existing knowledge lead to new data or facts? Or is the other way around? My argument is that new ways of thinking lead to discovery of new facts and data. One such example from the natural sciences is the Periodic Table of Elements‚ by Mendeleev. The Russian chemistry professor Dimitri Ivanovich Mendeleev and German Chemist Julius Luthar
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Reactions & Nuclear Chemistry Assessment Task Assignment Question 1 Produce a summary reactions sheet for all the chemical reactions encountered in production of materials. Your summary should contain the following components a) Name of reaction b) General word equation c) Balance formulae equation d) An example of the reaction Question 2 What types of instruments and processes are used to detect radiation? The properties of nuclear radiation are used to detect their
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Laura Speirs June 13‚ 2011 Professor Nalley Tungsten Paper Tungsten Tungsten is a gray-white metallic element that is stable and is very resistant to acids and bases. It does‚ however‚ oxidize in air‚ especially at higher temperatures Tungsten was discovered by Juan José and Fausto Elhuyar‚ Spanish chemists and brothers‚ in 1783 in samples of the mineral wolframite ((Fe‚ Mn)WO4). Tungsten was named from the Swedish words "tung sten" meaning "heavy stone." Tungsten ’s chemical symbol comes from
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differently and form new substances. It is important that chemical equations represent this law by always having equal numbers of each type of atom on both sides of the equation; chemists call this “balanced.” In a balanced equation‚ each type of element must appear on both sides of the arrow the same number of times. Sometimes it can be difficult to observe what happens to all of the atoms in a chemical reaction‚ especially if one of the reactants or products is a gas. Complete the lab demonstration
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Conditions- Solid 5. Astatine At Normal Conditions- Solid Give the names and formulas of three compounds that contain one element from the Noble Gas family. 1. Helium He 2. Neon Ne 3. Argon Ar 4. Krypton Kr 5. Xenon Xe 6. Radon Rn Look up the elements in group 15 from period 2 - 5‚ give the name and symbol of each. Give a biological use for each (click on the element and then on the term "biology" in the margin). 1. Nitrogen N nitrogen is a key component of biological molecules such
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Solubility in Water | | | | | | Group IA and Group IIA Elements | | | | Li2CO3 | Solid | White | Shiny Powder | Soluble | Na2CO3 | Solid | White | Refined Powder | Soluble | K2Co3 | Solid | White | Powder | Soluble | MgCO3 | Solid | White | Unrefined Powder | Insoluble | CaCO3 | Solid | White | Powder | Insoluble | BaCO3 | Solid | White | Crystalized Powder | Insoluble | | | | | | Some Group IVA Elements | | | | C | Solid | Black | Crystalized | NotApplicable
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Water: the source of life Water is an indefinable element. It can be destructible and wipe out the strongest forces in the world while it was also the beginning of life. It gives a lot but it can take back more than that. Water is one of the four elements of nature. It’s represented in the liquid form while earth is sold‚ air is gas and fire is the in-between of all. Water is important to every living thing. For plants it’s absorbed from the soil‚ for humans it’s for drinking and use for various
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Organic vs. Inorganic Le’Trice Crawford CRJ311: Forensics Christopher Mancuso May 18 ‚ 2012 The world that we live in is made up of organic and inorganic materials. The thing is known which is when you are confronted with a list of objects. This is the reason in this paper I intend to show the difference between organic and inorganic organisms. The definition of organic which means‚ of or pertaining to an organ; or the organs of an animal
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