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OpenStudy (anonymous):
Lead-212 is an isotope. It has a half-life of 15 years. After 30 years how much Lead-212 will remain if we had started with 10g of Lead-212?
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OpenStudy (johnweldon1993):
2.5g ;)
OpenStudy (anonymous):
Thanks so much!
OpenStudy (johnweldon1993):
Anytime :)
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