Homework Help: phy sci 101

Posted by aida on Friday, March 5, 2010 at 12:45am.

If you have 24 grams of an unstable atom with a half life of 5,000 years, how many grams would be left after 15,000 years

phy sci 101 - drwls, Friday, March 5, 2010 at 1:16am
Every 5000 years, the amount goes down by half. There three half-lives in 15,000 years.

24/2^3 = 24/8 = 3g
phy sci - jake, Tuesday, December 27, 2011 at 6:20pm
hafe life

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