Radioactive Isotopes and half life

AI Thread Summary
To determine the initial amount of a radioactive isotope that ends with 55.5 g after 8.3 days, the half-life of 2.5 days is used in the equation mf=mi(1/2^t/h). After calculating, the initial amount is found to be 554 g. This solution is confirmed as correct by other participants in the discussion. The calculations demonstrate the application of half-life principles in radioactive decay. Understanding these concepts is essential for solving similar problems in nuclear chemistry.
Zoey Brown
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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?
 
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Zoey 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?
yes, its is correct
 
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