The half-life for the radioactive decay of U?238 is4.5 billion years and is independent of initial concentration.
Fantastic news! We've Found the answer you've been seeking!
Question:
The half-life for the radioactive decay of U?238 is4.5 billion years and is independent of initial concentration.
A) How long will it take for 10% of the U?238 atoms in a sample of U?238 to decay?
Express your answer using two significant figures.
B) If a sample of U?238 initially contained1.4×1018 atoms when the universe was formed 13.8billion years ago, how many U?238 atoms will it contain today?
Express your answer using two significant figures.
Related Book For
Posted Date: