s26336099 s26336099

21-04-2021
Chemistry

contestada

An 80g sample of 3 1 H decays, leaving 2.5g of 3 1 H.
1. How long would this take?
2. What percentage of this sample would be left?
3. What fraction of this sample would be left?

3 1 H -> 3 2 He + 0 -1 /3 t1/2= 12.3 years

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21-04-2021

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