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An isotope of lead, 201Pb,

An isotope of lead, 201Pb, has a half-life of 8.4 hours. How many hours ago was there 40% more of the substance? (Round your
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2. asked by Dee
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Use a calculator to help solve the problem.An isotope of lead, 201Pb, has a half-life of 8.4 hours. How many hours ago was there
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2. asked by Dee
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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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2. asked by Anonymous
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1. Consider an isotope with 18 protons, a charge of +2, and a mass number of 38. Answer the following questions:a. How many
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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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Element X has three isotopesIsotope 1 Isotope 2 Isotope 3 Mass 28 29 30 Abundance % 92.18 4.71 3.12 ii)Use the isotope
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2. asked by 0oooooooo0
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Gallium65, a radioactive isotope of gallium, decays by first order-kinetics. The half-life of this isotope is 15.2 min. How long
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2. asked by Val
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Element xIsotope 55x 60% Isotope 56x 30% Isotope. 57x 10% 55× 60 =3300 56×30=1650 57× 10= 570 Add them up5520 divide by 100
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2. asked by lulu
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