Question
How old is a sample that contains 125 atoms of U-235 and 375 atoms of Pb-207?
...Given that the half life values on my handout are 713 million years.
*I do not even know where to start so could you please explain in steps too? Thanks.
...Given that the half life values on my handout are 713 million years.
*I do not even know where to start so could you please explain in steps too? Thanks.