Posted by **m** on Tuesday, March 5, 2013 at 8:57pm.

I've figured out most of it. I'm not sure how to find the percentage ofd the isotope.

Define the half life. The half-life of a radioisotope is found to be 4.55 minutes. If the decay follows first order kinetics, what percentage of isotope will remain after 2.00 hours if you start with 10.00 g?

T1/2= (.693)/k 4.55min = (.693)/k k =.152min-1

## Answer this Question

## Related Questions

- Chemistry - Gallium65, a radioactive isotope of gallium, decays by first order-...
- chemistry - If there are 80 milligrams of a radioactive element decays to 10 ...
- College Algebra - Use a calculator to help solve the problem. One isotope of ...
- half-life of radioisotope - A radioisotope has a half-life of 4 days. How much ...
- college algebra - One isotope of holmium, 162Ho, has a half life of 22 minutes. ...
- Chemistry - Will you check this answer for me? the half-life of strontium-87 is ...
- chemistry - use the nuclear decay equation to find out how much a 7mg sample of ...
- Chemistry - Technetium-99m is an ideal radioisotope for scanning organs because...
- Chemistry - Technetium-99m is an ideal radioisotope for scanning organs because...
- Chemistry - Technetium-99m is an ideal radioisotope for scanning organs because...

More Related Questions