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It takes 4 hr 39 min 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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It takes 4 hr 39 min for a 2.00-mg sample of radium-230 to decay to 0.25 mg. What is the half-life of radium-230?

User Frankgreco
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The half life for radium - 230 is 1 hour and 33 minutes

Hope this helps :D
User Chriscauley
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