The half-life of 234U, uranium-234, is 2.52 105 yr. If 98.6% of the uranium in the original sample is present, what length of time (to the nearest thousand years) has elapsed?
pre algebra - bobpursley, Sunday, April 29, 2012 at 2:59pm
take the ln of both sides..
solve for t
I get a little over 12 million yars