Asked by John
A radioactive element has a half-life of 6.41 days. What percent of the original sample will be left after 15.0 days?
Answers
Answered by
bobpursley
estimate: that is over 2 half lives, guessing 20 percent. The math
amountremaining=original*e^(-ln2*15/6.42)
decimal percent=e^(-ln2*15/6.42)=.199
or 19.9 percent
amountremaining=original*e^(-ln2*15/6.42)
decimal percent=e^(-ln2*15/6.42)=.199
or 19.9 percent
Answered by
John
Thanks
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