Answer:
After 5th half life the remaining mass is 31.25 g.
Explanation:
Given data:
Total mass of carbon-14 = 1000 g
Mass remain after 5 half lives = ?
Solution:
At time zero = 1000 g
At first half life = 1000 g/2 = 500 g
At second half life = 500 g/ 2= 250 g
At third half life = 250 g/ 2 = 125 g
At 4th half life = 125 g/2 = 62.5 g
At 5th half life = 62.5 g/2 = 31.25 g
Thus after 5th half life the remaining mass is 31.25 g.
