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OpenStudy (anonymous):
Radioactive Decay. the half-life of radium is 1690 years. If 8 grams of radium are present now, how many grams will be present in 100 years?
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OpenStudy (anonymous):
Oooo there's a special formula for radioactive decay. I think its: final amount = initial (0.5)^(100/1690) So the final amount would be 8*(0.5)^(100/1690)... i think
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