What is the half-life of iodine-131?

Half-Life Problems in Chemistry

Interactive Video
•
Chemistry, Science
•
9th - 12th Grade
•
Easy

Ethan Morris
Used 4+ times
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
32 days
16 days
8 days
4 days
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After 32 days, how much iodine-131 remains from an initial 200 grams?
25 grams
50 grams
12.5 grams
6.25 grams
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the rate constant K for iodine-131 if its half-life is 8 days?
0.04621
0.06931
0.13863
0.08664
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How long does it take for 750 grams of sodium-24 to decay from an initial 800 grams?
45 hours
30 hours
15 hours
60 hours
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the half-life of sodium-24?
15 hours
5 hours
10 hours
20 hours
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What fraction of oxygen-15 remains after five half-lives?
1/32
1/4
1/16
1/8
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many minutes correspond to five half-lives of oxygen-15?
5 minutes
20 minutes
10 minutes
15 minutes
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