Register
Suppose it takes 5 minutes for half of your sample to radioactively decay. If you started with 80 atoms, and have only 5 radioactive atoms left, how many half-lives have occurred?
105k views
0 votes
Suppose it takes 5 minutes for half of your sample to radioactively decay. If you started with 80 atoms, and have only 5 radioactive atoms left, how many half-lives have occurred?

User Asumu Takikawa
by
4.3k points

1 Answer

3 votes
4 half lives. If half decay each five minutes 80/2=40 40/2=20 20/2=10 10/2=5
User Patrick Evans
by
3.2k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

4.5m questions

5.9m answers

Other Questions

Which statement best explains the results of the experiment?
The half life of protactinium 234 in its ground state is 6.69 h. What fraction of a given amount remains after 26.76 h
I have no Idea what this is can someone help me? Which of these scenarios involve a reaction that is at equilibrium? The reaction is producing more products than reactants. The reaction is producing more
Identify the type of chemical bond that forms when potassium reacts with bromine to form a salt.
Please answer this question
Link Copied!