A substance at t=0, has the number of atoms 8×10^4, its half-life period is 3yr. 1*10^4 atoms will remain after how many years?19/24/9 or 6?

Ask your question
Login
Sign up

CollegeAnswers

You have questions? We got answers!

A substance at t=0, has the number of atoms 8×10^4, its half-life period is 3yr. 1*10^4 atoms will remain after how many years?19/24/9 or 6?

Science & Mathematics by Anonymous 2018-07-02 20:03:36

Social Science

A substance at t=0, has the number of atoms 8×10^4, its half-life period is 3yr. 1*10^4 atoms will remain after how many years?19/24/9 or 6?

1 answer

Anonymous

To decrease by a factor of 8, three half-life periods are required. So the answer is 9.