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OpenStudy (anonymous):
WILL FAN AND MEDAL 1 QUICK CHEM QUESTION!! If you started with 20.0 g of a radioisotope and waited for 3 half-lives to pass, then how much would remain? 10.0 g 5.00 g 2.50 g 1.25 g
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OpenStudy (sparrow2):
2,5
OpenStudy (sparrow2):
20:2=10 10:2=5 5:2=2,5
OpenStudy (anonymous):
he right ^
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