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Mathematics, 22.03.2021 20:00 israbennett

takes 1 hour and 21 minutes for a 2.00 mg sample of radium-230 to decay to 0.25 mg. What is the half-life of radium-230?

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takes 1 hour and 21 minutes for a 2.00 mg sample of radium-230 to decay to 0.25 mg. What is the half...
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