rutu7983 rutu7983 27-02-2024 Mathematics contestada Californium-253, a radioactive isotope with applications in nuclear energy and medicine, has a half-life of 18 days. out of a 50-gram sample of a californium-253, approximately how many grams remain after 90 days? A. 1.29 B. 1.56 C. 5.17 D. 5.86