Posted by **Charleze** on Sunday, May 23, 2010 at 2:56pm.

Ba-140 has a half life of 13.0 days. What fraction of a sample of Ba-140 will remain after 39 days?

A. 1/8th

B. 1/16th

C. 1/2th

D. 1/4th

## Answer this Question

## Related Questions

- chemistry - Ba-140 has a half life of 13.0 days. What fraction of a sample will ...
- chem - The half-life of is 30.0 days. What fraction of a sample of this isotope ...
- Plutonium decay - The amount A(gms) of radioactive plutonium remaining in a 20gm...
- Chemistry - What is used to tell different isotopes of a particular element ...
- chemistry - A radioactive sample contains 2.45 g of an isotope with a half-life...
- Chemistry - The half-life of 131I is 8.021 days. What fraction of a sample of ...
- Chemistry - The half-life of radon-222 is 3.82 days. If a sample of gas contains...
- chemistry - Iodine-131 has a half-life of 8 days. How many grams of a 12 g ...
- Chemistry - Po-210 Ia an alpha emitter with a half-life of 138 days. how many ...
- chemistry - The disintegration of a radioisotope, such as I-131 to Xe-131, is ...