- #1
Zoey Brown
- 17
- 0
Homework Statement
If a radioactive isotope ends with 55.5 g, and has a half-life of 2.5 days, how much was
there 8.3 days ago?
Homework Equations
mf=mi(1/2^t/h)
The Attempt at a Solution
the answer i got was 554 g, is it correct?