_29) Half-Life Problems
Flashcard
•
Chemistry
•
10th Grade
•
Practice Problem
•
Easy
Mikhail Zaritski
Used 2+ times
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29 questions
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1.
FLASHCARD QUESTION
Front
The diagram shows 32 atoms. The Red are parent isotopes, and the Green are daughter isotopes. How many half-lives have occurred?
Back
1
2.
FLASHCARD QUESTION
Front
The diagram shows 32 atoms. 32 of the Red are the parent isotope. How many half-lives have occurred?
Back
0
3.
FLASHCARD QUESTION
Front
What is the Half life of this isotope?
Back
10 seconds
4.
FLASHCARD QUESTION
Front
What is the Half Life of this isotope?
Back
3 days
5.
FLASHCARD QUESTION
Front
After 22,800 years, approximately what percentage of the original carbon-14 remains?
Back
6.25%
6.
FLASHCARD QUESTION
Front
How many more years will it take to have 0.625 grams of strontium-90?
Back
29 years
7.
FLASHCARD QUESTION
Front
Approximately how long would it take for 25 potassium atoms to decay starting with an original sample size of 100?
Back
0.64 billion years
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