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Portia Baranowski

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Q: How long will it take 27 grams of plutonium-240 to decay to 9 grams?
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Plutonium-240 decays according to the function Q(t)=Q 0 e^ -kt where Q represents the quantity remaining after t years and k is the decay constant 0.00011 ... To the nearest 10 years , how long will it take 36 grams of plutonium-240 to decay to 12 grams?

9,990 years


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