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The decay constant of radium is - 0.0004 per year. How many grams will remain of a 50-gram sample of radium after 20 years?
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The decay constant of radium is - 0.0004 per year. How many grams will remain of a 50-gram sample of radium after 20 years?

User NIKHIL C M
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3743 years i hop this is right have i hop that helps

User Jimmy Huang
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