10 g of a radioactive substance was placed in an airtight container 50 years ago. When the container is opened, only 2.5 g remains. What is the half-life of this material?

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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12:50 1
A) 5 years
B) 25 years
10 g of a radioactive substance was placed
in an airtight container 50 years ago. When
the container is opened, only 2.5 g remains.
What is the half-life of this material?
C) 50 years
D) 80 years
Question 7 of 10
E) 100 years
il 5G
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Transcribed Image Text:12:50 1 A) 5 years B) 25 years 10 g of a radioactive substance was placed in an airtight container 50 years ago. When the container is opened, only 2.5 g remains. What is the half-life of this material? C) 50 years D) 80 years Question 7 of 10 E) 100 years il 5G Tap here or pull up for additional resources Submit
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