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The half life of .(90)Th^(225) is 8 minu...

The half life of `._(90)Th^(225)` is 8 minutes How many half lives are there in 2 hours ? How long would you have to wait before there is less than 1 % of `._(90)Th^(225)` left in the sample ?

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`15; 53.15` min
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SL ARORA-ATOMS, NUCLEI AND MOLECULES-Problems For Self Practice
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  13. If 200 MeV energy is released per fission of .(92)U^(235) How many fis...

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