How many half-lives are required to change 230.4 g of a sample of a radioactive isotope to 1.8 g over approximately 21 d
Posted: Thu Dec 02, 2021 7:23 am
How many half-lives are required to change 230.4 g of a sample of a radioactive isotope to 1.8 g over approximately 21 days? half-lives. What is the approximate half-life of this isotope? days