Posted by **julie** on Thursday, January 13, 2011 at 10:52am.

If the radiological half life of a material is 31 minutes, and you have 77 grams

now, how much did you have 55 minutes ago?

## Answer This Question

## Related Questions

- chemistry - If there are 80 milligrams of a radioactive element decays to 10 ...
- half-life - 1. The half-life of a first-order reaction is 9.89 minutes. How many...
- science - If the half-life of a 20.0g is known to be 24 minutes, how long will ...
- Science - 43Lb has a half life of 42 minutes. If you start with 100 grams, how ...
- chemistry - If something originally contained 32.0 g of Po-210, which has a half...
- Chemistry - Which radioactive sample would contain the greatest remaining mass ...
- Half-Lifes - How much of a 6gram sample of silver-105m would remain after 4 ...
- physics - If the physical half-life of sulfur-35 is 87.1 days, and the biologic...
- math - You have just isolated a new radioactive element. If you can determine ...
- chemistry - A given reaction has an activation energy of 24.52 kJ/mol. At 25C ...

More Related Questions