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Lesson 3.2 Review

Last updated 3 months ago

5 questions

Required

1

Question 1

1.

In a sample with a half-life of 10 years, what percentage remains after 20 years?

Required

1

Question 5

5.

Required

1

Question 2

2.

What is the half-life of the parent isotope shown?

Required

1

Required

1

Question 4

4.

At what point is the amount of parent atoms the same amount as the daughter atoms?

0 half-lives

If 24 g of a 384 g radioactive sample remains after 18 hours, what is the half-life of the material? (write your answer as # hours)

Question 3

3.

How much material will remain after 3 half lives?

50%

25%

12.5%

6.25%

1 half-life

3 half-lives

6 half-lives