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• Part A The half-life for the radioactive decay of U - 238 is 4.5 billion years and is independent of initial concentration. How long will it take for 16 % of the U - 238 atoms in a sample of U - 238 to decay? Express your answer using two significant figures. Templaes Symbols ugdo redo resat keyboard shortcuts help. yr Reguest Answer Submit

• Part A The half-life for the radioactive decay of U - 238 is 4.5 billion years and is independent of initial concentration. How long will it take for 16 % of the U - 238 atoms in a sample of U - 238 to decay? Express your answer using two significant figures. Templaes Symbols ugdo redo resat keyboard shortcuts help. yr Reguest Answer Submit

Chemistry for Engineering Students
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter14: Nuclear Chemistry
Section: Chapter Questions
Problem 14.101PAE
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Cor • Part A The half-life for the radioactive decay of U – 238 is 4.5 billion years and is independent of initial concentration. How long will it take for 16 % of the U – 238 atoms in a sample of U – 238 to decay? Express your answer using two significant figures. Templates Symbols ugdo redo reset keyboard shortcuts help t = уг Submit Request Answer Part B If a sample of U – 238 initially contained 1.3x101° atoms and was formed 6.1 billion years ago, how many U – 238 atoms does it contain today? Express your answer using two significant figures. Templaes Symbols uado redo rest keyboard shortcuts help, N = atoms
Transcribed Image Text:Cor • Part A The half-life for the radioactive decay of U – 238 is 4.5 billion years and is independent of initial concentration. How long will it take for 16 % of the U – 238 atoms in a sample of U – 238 to decay? Express your answer using two significant figures. Templates Symbols ugdo redo reset keyboard shortcuts help t = уг Submit Request Answer Part B If a sample of U – 238 initially contained 1.3x101° atoms and was formed 6.1 billion years ago, how many U – 238 atoms does it contain today? Express your answer using two significant figures. Templaes Symbols uado redo rest keyboard shortcuts help, N = atoms
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