What is the half life of a radioactive substance if 2 4 g

Last updated: 5/5/2023

What is the half life of a radioactive substance if 2 4 g decays to 0 80 g in 65 hours Round to the nearest tenth of an hour 30 8 hours 41 0 hours O 26 4 hours O 20 5 hours O 10 3 hours