Post-Lab for Expt 468 WS99 Name_____________________ TA Name__________________ 1. A material has a 1/2 life of 2.6 years. If you start with 175 grams of the material, how much will remain after 1000 days? (Assume 365 days = 1 yr) (1 pt) 2. Determine X in each of the following reactions. (4 pts) a) 131 93 35 I ------> Kr + Cl + X 53 36 17 b) 235 1 87 146 U + n ---> Br + X + X 92 0 X 57