Posted by **cheryl** on Wednesday, November 2, 2011 at 10:08pm.

A certain radioactive substance has a half-life of 1 hour. If you start with 1 gram of the material at noon, how much will be left at 3:00 P.M.? At 6:00 P.M.? At 10:00 P.M.?

- physical science -
**Eugene**, Friday, September 18, 2015 at 8:40am
10

## Answer This Question

## Related Questions

- Physical Science - A gram of radioactive material has a half-life of one year. ...
- Physics - A certian radioactive isotope has a half-life of 1 hour. If you start ...
- Chemistry - A certain radioactive element has a half life of 1 h. If you start ...
- Calculus - A certain radioactive material decays exponetially. The percent, P, ...
- Physical Science- Help Please! - Suppose that you are given a 100 gram sample of...
- Physics check - A certain radioactive isotope has a half-life of one hour. At ...
- chemistry - if you start with 100mg of radioactive material that has a half life...
- College Algebra - The half-life of a radioactive material is about 34.6 years. ...
- math - You have just isolated a new radioactive element. If you can determine ...
- Calculus - The rate of decay is proportional to the mass for radioactive ...

More Related Questions