posted by Ashley on .
The disintegration of a radioisotope, such as I-131 to Xe-131, is another example of a first-order reaction.
It has a half-life of 8.0 days.
I-131 -> Xe-131 + e
If you start with 1.40 g I-131, how many grams of I-131 will be left after the following days?