Radioactive Isotopes An isotope is one of two or more atoms with the same number of protons‚ and position in the periodic table‚ but different number of neutrons and physical properties. Isotopes have an unstable nucleus that decay suddenly by a release of nuclear electrons and radiation. This essay will be discussing one of the applications and uses of the radioactive isotopes‚ and it will also state one problem that radioactive isotopes can address. The radiation characteristically
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Dating - An Issue of Personal Choice First there was the passing notes‚ hand holding and name-calling of middle school. Then you survived your first heartbreak when your high school sweetheart decided it would be best to be “just friends.” Now swept away in college life‚ with an important aspect being dorm life‚ you hardly take the time to step back and ask yourself‚ “What am I doing here? Who’s bed did I just wake up in‚ and how the hell did I get here?!” Okay‚ so the second part may not be
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Reminders: 1. In a neutral atom the number of protons equals the number of electrons. 2. An atom can NEVER gain or lose protons 3. The number of protons equals the atomic number NAME:________________________________________ Ion Practice Set 1. What is an ion? 2. What does the number next to the ions signify? Complete the following table‚ using the periodic table in the back of your book. ELEMENT NAME ION SYMBOL NUMBER OF PROTONS NUMBER OF ELECTRONS NUMBER OF ELECTRONS LOST OR GAINED ex Fluorine
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Radioactive Isotopes Radioactive Isotopes Medical isotopes are used in medicine in three distinct ways: 1. Radioactive isotopes can be injected into a patient‚ and their emitted energy can then be captured on film. The resulting image is an important diagnostic tool. 2. Gamma rays emitted from a radioactive source can be directed onto a tumour‚ destroying the cancerous cells. 3. Radioactive isotopes can be manufactured into drugs. Once injected into a patient‚ the drug will
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Mass Determination of Ca‚ Fe and Zn in a multivitamin using Atomic Absorbance Spectroscopy (AAS) and X-Ray Fluorescence Spectroscopy (XRF) ABSTRACT: The purpose of this project was to determine the amount of calcium‚ iron and zinc present in an over the counter multivitamin. This mass was determined using atomic absorption spectroscopy (AAS) and X-ray fluorescence spectroscopy (XRF). For both analytical techniques‚ the method of standard additions was used to compensate for matrix effects.
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died due to exposure to radiation. Several precautions should be observed while handling radioisotopes. Some of these are listed in the following:- 1. No radioactive substance should be handled with bare hands. Alpha and beta emitters can be handled using thick gloves. Gamma ray emitters must be handled only by remote
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As sex is socially acceptable in this day in age‚ there are many abstinence speakers who travel around the globe teaching teenagers and young adults of the perils of having sex outside of marriage. The best abstinence speaker I have heard is Brad Henning; in his speech/video‚ Don’t Take Love Lying Down‚ he goes into depth on the effects of having premarital sex‚ and how the consequences outweigh the momentary pleasure. For myself‚ I definitely do not plan on having sex before marriage‚ and I
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Before there were any true scientific dating methods‚ scientists depended on their past archives of fossils and strata in order to determine how old a newly found fossil was. However‚ it wasn’t until the mid 20th century that scientists could abandon this pathetic‚ inaccurate process and move into a more acceptable precise and detailed procedure. The old way was done by comparing one fossil to other fossils found in the same layer of the earth’s ground and studying the physical characteristics of
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Atomic Spectroscopy using a Constant Deviation Spectrometer with Fabry-Perot Etalon Abstract A constant deviation spectrometer with Fabry-Perot etalon has been used to investigate the various atomic emission characteristics from a Zn-Cd-Hg lamp‚ a low pressure Hg lamp and a Ne lamp. The Fabry-Perot etalon of Free Spectral Range 0.010 cm-1 was used to resolve the fringes of the Hg 546.0731nm spectral line‚ and the 594.4834nm‚ 614.3063nm‚ 640.2246nm and 650.6528nm spectral lines of the Ne lamp
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half-lives. The amount of radioactive isotope remaining can be calculated using the equation‚ ln [ (A)0 / (A) t1/2 ] = kt1/2 ‚ or‚ rearranged: ln 2 = kt1/2. A sample data set was provided due to safety concerns. Using the data set‚ a half-life of 14.46 days was calculated using graphical linear regression analysis. Introduction: Unstable isotopes of certain elements spontaneously disintegrate. Their nuclei discharge particles or energy. Observing the decay stages using an appropriate instrument allows
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