Wednesday

September 17, 2014

September 17, 2014

Posted by **Julie** on Tuesday, March 6, 2007 at 11:17am.

30 years 1/2

60 years 1/4

90 years 1/8

120 years 1/16????

IS this right

looks right to me.

**Answer this Question**

**Related Questions**

s103 - the isotope caesium -137, which has a half life of 30 years, is a product...

chemistry - The isotype caesium -137, which has a half life of 30 years, is a ...

DrBob222 - On Monday you helped me to understand and answer the one question, ...

Chemistry - Isotopes - The isotope caesium 137 has a half life of 30 years. How ...

chemistry - the isotope caesium-137 has a half life of 30 years how long will it...

science - Please help me with this question.... The isotope caesium-137, which ...

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

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

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 . ...