The discussion centers on calculating the initial amount of a radioactive isotope given its final mass of 55.5 g and a half-life of 2.5 days. Using the formula mf = mi(1/2^(t/h)), where mf is the final mass, mi is the initial mass, t is the total time elapsed, and h is the half-life, the correct initial mass calculated is 554 g. Participants confirm that this calculation is accurate, validating the use of the half-life formula in radioactive decay problems.
PREREQUISITESStudents studying chemistry, educators teaching nuclear physics, and anyone interested in understanding radioactive decay and its applications.
yes, its is correctZoey Brown said: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?