Thursday

October 23, 2014

October 23, 2014

Posted by **Shay** on Monday, September 24, 2012 at 1:22pm.

- Science chemistry -
**Scott**, Monday, September 24, 2012 at 1:54pmif n is the number of half-lives

(1/2)^n * 1.000 = 0.121

(1/2)^n = 0.121/1.000

n [log(1/2)] = log(0.121)

n = [log(0.121)] / [log(1/2)]

half life = [1h17m] / n

**Answer this Question**

**Related Questions**

chemistry - It takes 1 hour and 17 min. for a 1.000g sample of a certain isotope...

Chemistry - Gallium65, a radioactive isotope of gallium, decays by first order-...

college - a certain radioactive isotope has a half life or 850 years.how many ...

Physics check - A certain radioactive isotope has a half-life of one hour. At ...

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

Radioactivity or science - A radioactive isotope source has a mass of 120ug. If ...

Math - D.E.Q. - The half-life of a radioactive isotope is the amount of time it ...

MATH help - a certain radioactive isotope has a half life of approx 1,300 years...

Math - a certain radioactive isotope has a half life of approx 1,300 years . ...

MATH help - a certain radioactive isotope has a half life of approx 1,300 years...