SOLUTION: The half life of Iron-55 is approximately 2.7 years. How much of a 5 gram sample of Iron-55 would remain after 6 years? Round to 3 decimal places. Answer to part 1: a=0.773584

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Question 923628: The half life of Iron-55 is approximately 2.7 years. How much of a 5 gram sample of Iron-55 would remain after 6 years? Round to 3 decimal places.
Answer to part 1: a=0.773584

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
Q%5Bt%5D+=+Q%5B0%5D+e%5E%28-kt%29++
.5 = e^(-2.7k)
ln(.5)/-2.7) = .2567
........
Q%5Bt%5D+=+5e%5E%28-.2567%2A6%29++