+0  
 
0
65
1
avatar

The half-life of a radioactive material is 3175 years. If there is 400 grams of the radioactive material today, when would there be 25 grams still radioactive?

 Nov 22, 2019
 #1
avatar
0

25 =400 x 1/2^(y/3175), solve for y

 

0.0625 = 1/2^(y/3175)

 

y =12,700 Years - when 400 grams decays to 25 grams.

 Nov 22, 2019

20 Online Users

avatar