Register
A sample of radium-226 contains 1.0×108 atoms of radium-226. How many atoms of radium-226 will remain in the sample after three half-lives?
156k views
5 votes
A sample of radium-226 contains 1.0×108 atoms of radium-226. How many atoms of radium-226 will remain in the sample after three half-lives?

User FARcRY
by
8.3k points

1 Answer

4 votes
after 3 half lives it will be (1/2)^3 or 1/8 of original

so
1/8 times 10^8=1.25 x 10⁶ atoms left
User Maddoxej
by
7.8k points
← Prev Question Next Question →

Related questions

User Thd
asked Nov 18, 2024 129k views
The half-life of Radium-226 is 1590 years. If a sample contains 500 mg, how many mg will remain after 2000 years?
Thd asked Nov 18, 2024
by Thd
8.4k points
1 answer
2 votes
129k views
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.5m questions

12.2m answers

Other Questions

Compare and contrast an electric generator and a battery??
Can someone complete the chemical reactions, or write which one do not occur, and provide tehir types? *c2h4+h2o *c3h8 + hcl *c2h2+br2 *c4h10+br2 *c3h6+br2
As an object’s temperature increases, the ____________________ at which it radiates energy increases.
What is the evidence of a chemical reaction when the fireworks go off
Which of the following statements does not describe a physical property of a piece of chalk A. Chalk is solid B.chalk can be broken into pieces C. Chalk is white D. Chalk will bubble in vinegar
Link Copied!