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II 24 Iours, what is the half-life of Ra-226 in years? 27 3. Arsenic - 70 has a half life of 140 days. If there are 156 kg of remain after 13

II 24 Iours, what is the half-life of Ra-226 in years? 27 3. Arsenic - 70 has a half life of 140 days. If there are 156 kg of remain after 13

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter19: Nuclear Chemistry
Section: Chapter Questions
Problem 36P
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The Binding Energy: Calculate the following problems using the energy and mass equivalence formula. a Calculate its binding energy per atom in millions of electron volts. b. Calculate its binding energy per nucleon. 1. The mass of the atom Fluorine (F) is 18.99840 amu. - Calculate the Binding energy of 2.5 mole of Plutonium-238 if it has a mass of 237.98931 amu. E. Half Life and Radioactivity: . 190 grams of the isotope TI-208 undergoes B decay with a half-life of 3.1 min. a. What isotope is produced by the decay? b. How long will it take for 99.0% of a sample of pure TI-208 to decay? - "1g of Ra-226, produces 0.0001 mL of the gas Rn - 222 at STP (Standard temperature and pressure) in 24 hours, what is the half-life of Ra-226 in years? 2 *1034 3. Arsenic - 70 has a half life of 140 days. If there are 156 kg of this sample how much of As - 70 will remain after 13.5 hours. 4. Te - 105 has a half life of 203.9 hours. If there are 1054 g of Te- 105 initially, how long will it take for 500 g of Te - 105 to decay? 3. It takes 100 days for a 1502 g sample of element Z to decay to a final amount of 92 grams. What is the half life of the element?
Transcribed Image Text:The Binding Energy: Calculate the following problems using the energy and mass equivalence formula. a Calculate its binding energy per atom in millions of electron volts. b. Calculate its binding energy per nucleon. 1. The mass of the atom Fluorine (F) is 18.99840 amu. - Calculate the Binding energy of 2.5 mole of Plutonium-238 if it has a mass of 237.98931 amu. E. Half Life and Radioactivity: . 190 grams of the isotope TI-208 undergoes B decay with a half-life of 3.1 min. a. What isotope is produced by the decay? b. How long will it take for 99.0% of a sample of pure TI-208 to decay? - "1g of Ra-226, produces 0.0001 mL of the gas Rn - 222 at STP (Standard temperature and pressure) in 24 hours, what is the half-life of Ra-226 in years? 2 *1034 3. Arsenic - 70 has a half life of 140 days. If there are 156 kg of this sample how much of As - 70 will remain after 13.5 hours. 4. Te - 105 has a half life of 203.9 hours. If there are 1054 g of Te- 105 initially, how long will it take for 500 g of Te - 105 to decay? 3. It takes 100 days for a 1502 g sample of element Z to decay to a final amount of 92 grams. What is the half life of the element?
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