Posted by **David** on Tuesday, August 28, 2012 at 6:58pm.

Find the half-life (in hours) of a radioactive substance that is reduced by 10 percent in 5 hours.

## Answer this Question

## Related Questions

- chm - An unknown radioactive substance has a half-life of 3.20 . If 34.8 of the ...
- math - A researchr assistant made 160mg of a radioactive, and found that there ...
- physics - The half-life of a certain radioactive isotope is 32 hours.What ...
- math - an extremely volatile substance, Ofnetite, has a half-life of 25 minutes...
- calculus - The rate at which an amount of a radioactive substance decays is ...
- Math-Exponential Decay - A lab technician had 58 grams of a radioactive ...
- linear/exponential - This question involves the half-life formula. In this ...
- math - A recent survey shows that the average man will spend 141,288 hours ...
- Science - Radioactive substance decays so that after t years, the amount ...
- Calculus Help Please!!! - A radioactive substance has a half-life of 4 days. ...