Wednesday

September 3, 2014

September 3, 2014

Posted by **Matt** on Thursday, May 21, 2009 at 3:46pm.

40K + e- -> 40Ar k = 5.81 X 10^-11 year^-1

Calculate the half-life of the radioactive decay.

- Chemistry -
**DrBob222**, Thursday, May 21, 2009 at 4:50pmk=0.693/t(1/2). Solve for t(1/2)

- Chemistry -
**Sarah**, Thursday, May 21, 2009 at 4:50pmWhat order do you think this is?

From there use that information and find the half life equation.

Then just plug it in to get the answer

Hope that helps!

**Answer this Question**

**Related Questions**

Math/Radioactive Dating - How would I calculate the age of a rock only given the...

College Geology Homework - Suppose you have a sample of potassium feldspar from ...

Math/Radioactive Dating - My teacher said that if the ratio of mass (in a rock) ...

Geology - I need help with a radiometric dating equation. I am trying to ...

Chemistry 1046 - Geologists can estimate the age of rocks by their uranium-238 ...

Chemistry - Geologists can estimate the age of rocks by their uranium-238 ...

chemistry - Which of the following isotopes possesses a greater number of ...

statistics - The 92 million Americans of age 50 and over control 50% of all ...

geology - In this problem, we will use amounts of the isotopes that are ...

Chemistry - A rock containing 238U and 206Pb was examined to determine its ...