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Mathematics, 03.11.2020 17:30 robert7248

1. A 90 g sample of plutonium-238 has a half-life of 88 years. How long will it take for this sample 40 g? [5]

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1. A 90 g sample of plutonium-238 has a half-life of 88 years. How long will it take for this sample...
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