How much time would it take for 40000 atoms of sodium-24 (half-life is 15 days) to decay to 2500 atoms?

Question

asked Aug 1, 2023 87.1k views

1 Answer

Sdhaus · Answer 1 · 2023-08-07T05:23:14+0000

Answer:

60 days

Step-by-step explanation:

2500 = 40000 ( 1/2) ^n

n = 4 half lives

4 half lives * 15 days/ halflife = 60 days