Question

Manganese-56 is a beta emitter with a half-life of 2.6 hours. What is the mass of

manganese-56 in a 8.0 g sample of the isotope at the end of 13 hours?

Answer 1

0.0009765625

Step-by-step explanation: u just keep doing a half life till it goes to 13 aka

8.0g divided by 2 till you reach to 13 times of a half life ;p