The element americium is used in smoke detectors. It is radio active and has a half life of 462 years. A quick internet search reveals that smoke detectors should be replaced after about 10 years but they don't state if that is because of the loss of americium or some other factor. If a smoke detector was manufactured with 330 nanograms of americium oxide, what percent of it is left after 96 years? (Enter your answer as a percent but without the % sign.)
The element americium is used in smoke detectors. It is radio active and has a half life of 462 years. A quick internet search reveals that smoke detectors should be replaced after about 10 years but they don't state if that is because of the loss of americium or some other factor. If a smoke detector was manufactured with 330 nanograms of americium oxide, what percent of it is left after 96 years? (Enter your answer as a percent but without the % sign.)
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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If a smoke detector was manufactured with 330 nanograms of americium oxide, what percent of it is left after 96 years? Round your answer to the nearest tenth.
Transcribed Image Text:The element americium is used in smoke detectors. It is radio active and has a half life
of 462 years. A quick internet search reveals that smoke detectors should be replaced
after about 10 years but they don't state if that is because of the loss of americium or
some other factor. If a smoke detector was manufactured with 330 nanograms of
americium oxide, what percent of it is left after 96 years? (Enter your answer as a
percent but without the % sign.)
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