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The isotope sodium-22 has a

One isotope of sodium has 11 protons and 7 neutrons. What is the mass number of this isotope?4 7 11 18
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One isotope of sodium has 11 protons and 7 neutrons. What is the mass number of this isotope?4 7 11 18
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Sodium only has one naturally occuring isotope, Na23, with a relative atomic mass of 22.9898 u. A synthetic, radioactive isotope
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An isotope of sodium has a half-life of 20 hours. Suppose an initial sample of this isotope has mass 10 grams. The amount of the
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A 208 g sample of sodium-24 decays to 13.0 g of sodium-24 within 60.0 h. What is the half-life of this radioactive isotope?
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2. asked by Matthew
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The radioactive isotope sodium-24 is used as a tracer to measure the rate of flow in an artery or vein. The half life of
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A rare isotope of a nuclear material is very unstable, decaying at a rate of 12% each second. Find how much isotope remains
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A rare isotope of a nuclear material is very unstable, decaying at a rate of 13% each second. Find how much isotope
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Consider the isotope arsenic-76How many protons are in an atom of this isotope? 33 What is the mass number of this isotope? 76
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Consider an isotope with 38 electrons, an atomic number of 39, and a mass number of 86. Answer the following questions:a. How
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