Earth Science
posted by Christine .
How long will it take for Potassium to have a 25% of oringinal radioactive product left?

Which isotope? What is the half life?
In two halflifes, 25percent will remain.
posted by Christine .
How long will it take for Potassium to have a 25% of oringinal radioactive product left?
Which isotope? What is the half life?
In two halflifes, 25percent will remain.