Question 1 ( point) A 64g sample of Germanium-66 is left undisturbed for 12.5 hours. At the end of that period, only 2.0g remain. How many half-lives transpired during this time period? half-lives Answer = Blank 1:​

2.5 half-lives

Step-by-step explanation:

Find in given

is the amount after the time , `is the initial amount, is the half-life

We know that after half-life there will be twice less the initial quantity:

.

Simplifying gives

Plugging this into the initial equation, we obtain that or

Finally, just plug in the given values and find the unknown one.

From , we have that =

So you should get:

pls refer ro the top for answer