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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: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter18: Nuclear Reactions
Section: Chapter Questions
Problem 39QAP
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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.
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.)
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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