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A 432 g sample of 60/27Co has a decay constant of 4.14 x 10-9 s-1. How long will it take before only 1/3 of the original sample remains?
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14 votes
14 votes
A 432 g sample of 60/27Co has a decay constant of 4.14 x 10-9 s-1. How long will it take before only 1/3 of the original sample remains?

User Lovin
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26 votes
26 votes

Answer:

432 60 27 4.14 10 9 1=15000

User Jon Nichols
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