# At the beginning of an experiment, a scientist has 372 grams of radioactive goo. After 135 minutes, her sample has decayed to 23.25 grams. What is the half-life of the goo in minutes?

##### 1 Answer

Jul 31, 2018

Half life question

#### Explanation:

Initial mass

Final mass

Exponential decay says (k is decay constant and t is time)

Now we can calculate half-time:

Half time of goo is 33.81 minutes.