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the half life of plutonium 239 is 24300 years if a nuclear bomb released 8 kg of this isotope how many years would pass before the amount is reduced to 1 kg use the law of radiation decay 30376

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The spent fuel of a nuclear reactor contains plutonium-239, which has a half-life of 24,000 years. If 1 barrel containing 10 kg of plutonium-239 is sealed, how many years must pass until only 10 g of plutonium-239 is left?