Half-Life practice Create a graph that represents how a radioactive element will decay. What is half-life? ass remaining 100 90 80 70 60 2

Modern Physics
3rd Edition
ISBN:9781111794378
Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Chapter13: Nuclear Structure
Section: Chapter Questions
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Half-Life practice
2 What is half-life?
0
CALAFUER
% of original mass remaining
100
90
80
70
60
50
40
30
20
10
51
Counts per minute
0 1 2 3 4 5 6 7 8 9 10
Number of half-lives
80
70
60
The graph below shows the breakdown of radon-222.
50
40
30
20
10
Create a graph that represents how a
radioactive element will decay.
0
0
The half-life of Po-214 is 0.001 seconds. How
much of a 10-gram sample is left after 0.003
seconds?
1 2
3
5
Time (Days)
4
6
7 8 9 10
Gold-198 has a half life of 2.7 days. Complete the
table for an initial sample size of 200 grams.
TIME ELAPSED
7
0 days
2.7 days
AMOUNT
REMAINING
200 grams
How much of a 500g sample of potassium-42 is left after
37.2 hours if the half-life of potassium-42 is 12.4 hours.
What is the half-life of Rn-222?
What fraction of the original sample will be left after 3 half-lives?_
How much of a 100 gram sample of gold-198 is left after
8.10 days if its half life is 2.7 days?
The Irendy Science Jeacher 2020
Transcribed Image Text:Half-Life practice 2 What is half-life? 0 CALAFUER % of original mass remaining 100 90 80 70 60 50 40 30 20 10 51 Counts per minute 0 1 2 3 4 5 6 7 8 9 10 Number of half-lives 80 70 60 The graph below shows the breakdown of radon-222. 50 40 30 20 10 Create a graph that represents how a radioactive element will decay. 0 0 The half-life of Po-214 is 0.001 seconds. How much of a 10-gram sample is left after 0.003 seconds? 1 2 3 5 Time (Days) 4 6 7 8 9 10 Gold-198 has a half life of 2.7 days. Complete the table for an initial sample size of 200 grams. TIME ELAPSED 7 0 days 2.7 days AMOUNT REMAINING 200 grams How much of a 500g sample of potassium-42 is left after 37.2 hours if the half-life of potassium-42 is 12.4 hours. What is the half-life of Rn-222? What fraction of the original sample will be left after 3 half-lives?_ How much of a 100 gram sample of gold-198 is left after 8.10 days if its half life is 2.7 days? The Irendy Science Jeacher 2020
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