A sample of radioactive isotope with an original mass of 10.0 grams is observed for 24 days. After that time, 1.25 grams of the isotope remains. What is its half-life?"
![]() |
A sample of radioactive isotope with an original mass of 10.0 grams is observed for 24 days. After that time, 1.25 grams of the isotope remains. What is its half-life?"
Use the formula:
Just divide 10 grams by 2 until only 1.25 grams are left. How many steps did that take? How many hours or days did each step take? There is your half life.
All times are GMT -7. The time now is 12:11 PM. |