A sample of hypothetical element X decays by positron emission and has a half-life of 79 years. How many years are necessary for a sample of this radioisotope to be reduced by 79%? Answer to the nearest year.
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A sample of hypothetical element X decays by positron emission and has a half-life of 79 years. How many years are necessary for a sample of this radioisotope to be reduced by 79%? Answer to the nearest year.
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