Two radioactive waste products from nuclear reactors are
Chapter , Problem 36(choose chapter or problem)
Two radioactive waste products from nuclear reactors are strontium 90 38Sr (T1/2 5 29.1 yr) and cesium 134 55 Cs (T1/2 5 2.06 yr). These two species are present initially in a ratio of N0,Sr /N0,Cs 5 7.80 3 1023 . What is the ratio NSr /NCs fi fteen years later?
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