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36 votes
36 votes
How much of a sample remains after five half-lives have occurred?

1/5 of the original sample
1/25 of the original sample
1/32 of the original gample
1/64 of the original sample

User Yxre
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2 Answers

21 votes
21 votes

Answer:

1/32

Step-by-step explanation:

User Loufi
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2.7k points
13 votes
13 votes
The answer is 1/32

The first half-life, we have 1 • 1/2 = 1/2 left.
After two: 1/2 • 1/2 = 1/4
Three: 1/4 • 1/2 = 1/8
Four: 1/8 • 1/2 = 1/16
And five: 1/16 • 1/2 = 1/32.
User Gus E
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3.4k points