Chemistry Problem Solving Videos @ WVU

Chem 110B - Prep Chem

Ch.15 - Radioactive Decay

Answer the following:

A. The half-life of tritium is 13.3 years. How much tritium will remain in a container with 7.51 g of tritium 5.5 years from now?

B. How many grams of 53131I (radioactive iodine used to treat thyroid disease) were used to treat a patien 6 weeks ago if his follow-up exam show 0.012 g left? (The half-life of radioactive iodine is 8 days).