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
Problem 23P
Related questions
Question
![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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7da643cb-e17f-4d4e-ae2e-83848964cd7c%2Fe094db85-9a25-4bc6-977a-af0befb09c30%2Fhw9b7b_processed.jpeg&w=3840&q=75)
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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