Half life questions
1. Radioactive isotope X has a half-life of 7 days. If 598 MCi of substance X is released into the environment, how much will remain after 33 days
?
2. If a sample of I-131 is allowed to sit for 48 days some of the radioactive material will have undergone decay. If the half-life of I-131 is 8 days and the sample started out with a content of 600
MCi
?
