Question

In 1992, Swiss police arrested two men who were attempting to smuggle osmium out of Eastern Europe for a clandestine sale. However, by error, the smugglers had picked up^137 Cs. Reportedly, each smuggler was carrying a 1.0g sample of^137 Cs in a pocket. In bequerels, what was the activity of each sample? The isotope^137 Cs has a half-life of 30.2 years. (The activities of radio-isotopes commonly used in hospitals range up to a few millicuries.) 1.2 times 10^9 Bq 2.3 times 10^10 Bq 3.2 times 10^12 Bq 4.3 times 10^14 Bq

Answer 1