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Title: How long does it take for 90% of a sample of strontium-90 (half-life of 28.8 years) to decay? Post by: dtimmons95 on Mar 29, 2017 How long does it take for 90% of a sample of strontium-90 (half-life of 28.8 years) to decay?
Title: Re: How long does it take for 90% of a sample of strontium-90 (half-life of 28.8 years) to decay? Post by: bio_man on Mar 29, 2017 Solution provided below:
https://www.youtube.com/watch?v=8zFGr4T5VoE |