Kaito Kaito
  • 28-01-2025
  • Chemistry
High School

A potassium-40 sample starts with 50 atoms, and 1.25 billion years later, there are 25 atoms. What is the half-life of potassium-40?

A. 2.5 billion years
B. 25 years
C. 40 years
D. 1.25 billion years

Answer :

ruinosu ruinosu
  • 28-01-2024
D. 1.25 billion years
Answer Link

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