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Please help. I figured out the first part but don't know the second part. Suppose you...

Please help. I figured out the first part but don't know the second part.

Suppose you start with a sample with 4.150×108 nuclei of a particular isotope.

This isotope has a half-life of 446 s. What is the decay constant for this particular isotope?

How many nuclei remain after 1.13×103 s?

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e2 t z Lime 3

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