Biology, 01.03.2021 20:20 unkown77

Sr-90 has a half-life of 30 years. If our sample of Sr-90 now has a mass of 1500 grams, what was the mass of our Strontium-90 90 years ago.

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Sr-90 has a half-life of 30 years. If our sample of Sr-90 now has a mass of 1500 grams, what was the...

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