A sample originally contains 16 grams of a radioactive isotope. After 36 days, 14.8 grams of the isotope remain in the sample.
What is the half-life of the isotope?
Enter your answer in the box. Round your answer to the nearest day.
14.8 = 16 e-k(36) Solve for k = .002165598
8 = 16 e-.002165598 t Solve for t = t1/2 = 320 days