8.01- Half-life and radioactive decay Shelby Wolf Uranium 1) Where is this substance most likely found and how abundant is it? It is found within the Earth’s crust‚ also found in rock‚ soil‚ rivers‚ and oceans. It is believed to be available for at least the next 85 years‚ U-238: 99.27 U-235: .72 U-234: 0.0055 2) What type of decay does this substance undergo and how harmful can it be to those exposed? The U-235 undergoes nuclear fission
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for processing liquid radioactive waste water using membrane techniques to single out only radioactive waste components without affecting the salt ballast. This solution dramatically reduces the amount of radioactive concentrates to be long-term storage‚ and provides an opportunity to re-use treated water and chemicals. Keywords. Liquid radioactive waste‚ radioactive waste water purification‚ reverse osmosis‚ selective extraction of radionuclides. Introduction. To radioactive waste are not subject
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Date: 10/20/14 Angineh A. Zohrabi GE150 Unit 5 Assignment 1: Radioactive Tracing Technology Radiation facts and health effects Radiation is a form of energy. It comes from man-made sources such as x-ray machines‚ from the sun and outer space‚ and from some radioactive materials such as uranium in soil. Radiation travels as rays‚ waves or energetic particles through air‚ water or solid materials. Radioactive materials are composed of atoms that are unstable. As unstable atoms become stable‚ they
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Isotopes in Agriculture An isotope is a two or more atom that has different mass number but the same atomic number. An isotope is a variation of an element with a difference in the normal number of neutrons. The increased mass of an isotope can cause the chemical reactions they are used in to progress more slowly than a reaction that does not use isotopes. Not all isotopes are radioactive and there are many uses for them. They can be used in medicine‚ diagnose‚ nutrition‚ agriculture‚ research
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Test #3 Chapter 2: 1) What is matter? 2) What is mass? 3) Matter that has a uniform and definite composition is called a ______. Give an example. 4) A quality/condition of a substance that can be observed/measured without changing the substance is a ________ __________. Give examples. 5) What are the three states of matter? Put the correct state of matter in each box. 6) What is the difference between gas and vapor? 7) What is a physical change? Give an example. 8) A physical blend
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Radioactive dating Isotope: Carbon-14 |Name |radiocarbon‚14C | |Neutrons |8 | |Protons |6 | |mass
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Iodine Isotopes are the atoms that have in their nucleus an atomic number corresponding to the chemical behavior of that element. Since isotopes have the same number of protons‚ they all have identical chemical behavior. But‚ however‚ since their neutron numbers are different the isotopes of the same element may have different radioactivity. An isotope that is radioactive is called a radioisotope like iodine‚ which is important in our health. In radioactivity‚ the nucleus of an unstable isotope or element
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PHYSICAL CHEMISTRY CHAPTER 1 Principle of Chemistry Relative Atomic Masses of atoms & molecules Mass number & atomic number Atomic structure (neutrons‚ protons & electrons) Mole concept & conversion Avogadro’s concept Empirical & molecular formulae Isotopes FHSC1114 Physical Chemistry Centre for Foundation Studies‚ UTAR Objectives To define relative atomic masses of atoms & molecules To define & determine mass no. & atomic no. To determine no. of neutrons‚ protons & electrons To understand
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Carbon-14 Dating: An Invaluable Yardstick in the Chronology of Humans Archaeologists utilize several methods to analyze data from the past. One scientific tool helps to analyze the radioactive decay of chemical elements found in plant and animal remains‚ pottery‚ and even rocks. Radiocarbon dating‚ also known as carbon-14 dating‚ has developed into one of the most important radioisotope dating methods archaeologists employ. This scientific tool‚ first developed by Willard F. Libby in the late
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found as a solid and is most commonly found as a byproduct to mining iron and nickel‚ and is only classified as cobalt for about 40 days after being harvested. Even more information about this fascinating element would be that it is an artificial isotope‚ is an important gamma ray source‚ and is extensively used as a tracer and a radio therapeutic agent. Other uses that are more close to home if you will would be that it can be used for high-speed‚ heavy-duty‚ high temperature cutting tools‚ and for
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