Register
How long does it take for 87.5 % of each isotope(Krypton-73, Krypton-74, Krypton-76, and Krypton-81) to decay?
173k views
0 votes
How long does it take for 87.5 % of each isotope(Krypton-73, Krypton-74, Krypton-76, and Krypton-81) to decay?

User Siddharth Venu
by
6.3k points

1 Answer

4 votes
1st half-life: 100%/2 = 50%
2nd half-life: 50%/2 = 25% + 50% (from first half-life)
3rd half-life: 25%/2 = 12.5% + 75% (from first and second half-lives

I looked it up...
User Borislemke
by
5.9k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

7.4m questions

9.9m answers

Other Questions

How do you balance __H2SO4 + __B(OH)3 --> __B2(SO4)3 + __H2O
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
Key facts of covalent bonding
Which is an example of an atom? A)the smallest unit of Ne B)the smallest unit of p4 C)the smallest unit of NH3 D)the smallest unit of H2O
Link Copied!