![Chemistry](/tpl/images/cats/himiya.png)
Just as carbon dating is used to measure the age of organic material, Argon-40 can be used to measure the age of rocks. A volcanic eruption melts a large chunk of rock, and all gasses are expelled. After cooling, Argon-40 accumulates from the ongoing decay of potassium-40 in the rock (t_1/2 = 1.25E9 years). When a piece of rock is analyzed, it is found to contain 1.38 mmol of potassium-40 and 1.14 mmol of Argon-40. How long did the rock cool?
![answer](/tpl/images/cats/otvet.png)
Answers: 2
Other questions on the subject: Chemistry
![image](/tpl/images/cats/himiya.png)
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 09:30, junkmailemail42
Which element is the least metallic between cadmium, silver, zinc, or iron?
Answers: 1
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 17:30, kaytonleeb
Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by
Answers: 2
Do you know the correct answer?
Just as carbon dating is used to measure the age of organic material, Argon-40 can be used to measur...
Questions in other subjects:
![Konu](/tpl/images/cats/istoriya.png)
History, 17.01.2020 19:31
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/fizika.png)
Physics, 17.01.2020 19:31
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 17.01.2020 19:31
![Konu](/tpl/images/cats/istoriya.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/istoriya.png)