Posted by **andrew** on Sunday, June 3, 2012 at 1:43am.

After 1.84 days, the activity of a sample of an unknown type radioactive material has decreased to 85.8% of the initial activity. What is the half-life of this material? (in days)

## Answer This Question

## Related Questions

- chemistry - The half-life for the radioactive decay of calcium-47 is 4.5 days.If...
- Physics 30 - The activity of a sample of a radioactive isotope is 1800Bq. If ...
- Algebra 2 help... - A half life of a certain radioactive is 36 days. An initial ...
- math - 6. The half-life of a certain radioactive material is 32 days. An initial...
- Physics - University students, studying the activity of a particular radioactive...
- Physics - A radioactive isotope of Bismuth undergoes Beta Decay with a half-life...
- Radioactivity - Beryllium-7 has a half-life of 53 D. A sample was observed for ...
- physics - Suppose 32000 radioactive nuclei are in a sample. About how many ...
- Chemistry Numerical - The half life period of a radioactive element is 27.96 ...
- Chemistry - Radioactivity - The activity of a sample of Ba-137m has decreased by...

More Related Questions