Biology, 20.11.2019 21:31 kwilly60

Strontium-90 has a half-life of 29 years. in how many years will a 1 kg sample of strontium-90 decay and reduce to 0.25 kg of strontium-90?

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Strontium-90 has a half-life of 29 years. in how many years will a 1 kg sample of strontium-90 decay...