Tritium 3H is a radioactive isotope of hydrogen which has a first-order half-life of 12 years. On March 11, 2011 the Fukushima Dai-ichi Nuclear Power Plant in Japan was devastated by a Tsunami. The clean up waste water from cooling the reactor after the accident is now being released to the ocean which has been "cleaned" except for radioactive tritium. Given the 12 year half-life, what fraction (%) of the original tritium remained on March 11, 2021?

Chemistry
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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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Tritium 3H is a radioactive isotope of hydrogen which has a first-order half-life of 12 years. On March 11, 2011 the Fukushima Dai-ichi Nuclear Power Plant in Japan was devastated by a Tsunami. The clean up waste water from cooling the reactor after the accident is now being released to the ocean which has been "cleaned" except for radioactive tritium. Given the 12 year half-life, what fraction (%) of the original tritium remained on March 11, 2021?

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56%
50%
12%
5.0%
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