Question

with 1.50 g of Cu from a CuSO4 solution? 16. Iron 59 has a half-life of 44.5 days. It is a beta emitter used to monitor spleen function after trauma. If an accident victim receives a 5.6-uCi dose, what fraction of the Fe59 nuclei will have decayed after 17 days?

Answer 1

tle of Toon 59 - 44.5 days Initial amount Noz S. Guci Amount after 17 days so tz 17 days Since Nez No (2) El N43 .6 14, 647.) Nta s.6 .3822247 Nta 5.6 (1) 03 taking log both side- Toglo NE log 5.6 + 0.38202247 log (1) 2 0.748 188-+ 0.3920 2247 ( -0.3010) , 0.748188 -0.11498876 10giont = 0.633199 taking Anti los both side O Nt= 4.2973 uci So Amount of fe sa decayed = None a 5.6-4.2973 2 1- 3627 fruction of fesy decayed, 1.3027, 1.3027 0.232625 No 256 So fraction of fess dicayed was 0.232625 of S:Gluci after 17 days