Question

The half life of radon-222 is 3.824 days. After what time will one fourth of a given amount of radon remain?

Answer 1

Answer:

7.648 days

Explanation:

 Given The half life of radon-222 is 3.824 days. After what time will one fourth of a given amount of radon remain?

There are two terms . It means one term and another is half life period.They have given half life of Radon- 222 is 3.824 days. We need to find the time remaining for one fourth or quarter at the end. So we need twice to get one quarter at the end since it will be 1 , 1/2 and next will be 1/4.

Therefore it will be two times and we need to multiply by 2

 Now 3.824 x 2 = 7.648 days    

After 7.648 days one quarter will remain