Part C Americium-241 is used in some smoke detectors. It is an alpha emitter with a half-life of 432 years. How long will it take in years for 33.0 % of an Am-241 sample to decay? Express your answer with the appropriate units. ▸ View Available Hint(s) t= Value μA Submit Previous Answers Part D X Incorrect; Try Again; 3 attempts remaining t= Units Show Transcribed Text A fossil was analyzed and determined to have a carbon-14 level that is 80% that of living organisms. The half-life of C-14 is 5730 years. How old is the fossil? Express your answer with the appropriate units. ▸ View Available Hint(s) μA ? Value Units ?
Part C Americium-241 is used in some smoke detectors. It is an alpha emitter with a half-life of 432 years. How long will it take in years for 33.0 % of an Am-241 sample to decay? Express your answer with the appropriate units. ▸ View Available Hint(s) t= Value μA Submit Previous Answers Part D X Incorrect; Try Again; 3 attempts remaining t= Units Show Transcribed Text A fossil was analyzed and determined to have a carbon-14 level that is 80% that of living organisms. The half-life of C-14 is 5730 years. How old is the fossil? Express your answer with the appropriate units. ▸ View Available Hint(s) μA ? Value Units ?
Introductory Chemistry: An Active Learning Approach
6th Edition
ISBN:9781305079250
Author:Mark S. Cracolice, Ed Peters
Publisher:Mark S. Cracolice, Ed Peters
Chapter20: Nuclear Chemistry
Section: Chapter Questions
Problem 67E
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Transcribed Image Text:Part C
Americium-241 is used in some smoke detectors. It is an alpha emitter with a half-life of 432 years. How long will it take in years for 33.0 % of an Am-241 sample to decay?
Express your answer with the appropriate units.
► View Available Hint(s)
Value
μÀ
Submit Previous Answers
Part D
X Incorrect; Try Again; 3 attempts remaining
O Show Transcribed Text
Units
Submit
A fossil was analyzed and determined to have a carbon-14 level that is 80 % that of living organisms. The half-life of C-14 is 5730 years. How old is the fossil?
Express your answer with the appropriate units.
► View Available Hint(s)
μA
t = Value
?
Units
?
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