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What percent of my Iodine-131 sample will be left after 7 half-lives?

What percent of my Iodine-131 sample will be left after 7 half-lives?
asked 9.3k views
5 votes
What percent of my Iodine-131 sample will be left after 7 half-lives?

asked
User Olovb
by
7.6k points

1 Answer

6 votes

Answer:

0.78125%

Step-by-step explanation:

(1/2)^7 = 1/128 = 0.78125%

answered
User Nelaaro
by
8.1k points
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