dylanentwistle2354 dylanentwistle2354

09-11-2017
Chemistry

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Radium-221 has a half-life of 30 s. how long will it take for 95% of a sample to decay

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EmiLy4444 EmiLy4444

15-11-2017

Radium-221 has a half-life of 30 s. how long will it take for 95% of a sample to decay

this would be 2.22 seconds

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good job