![subject](/tpl/images/cats/himiya.png)
Chemistry, 14.06.2021 15:30 avagymnast421
The half life for the radioactive decay of potassium-40 to argon-40 is 1.26×109 years. Suppose nuclear chemical analysis shows that there is 0.359 mmol of argon-40 for every 1.000mmol of potassium-40 in a sample of rock. Calculate the age of the rock.
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 07:50
In which situation can a mixture always be called a solution
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 05:30
Based on the formulas, select the compounds below that are covalent: kbr sif4 al2o3 co2 naco3 s7o2 pcl3 fe3n2 h2o s2f10
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 07:30
Can you guys answer these questions i need it before 1: 00pm
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 15:00
This is a portion of the earths surface that may be far from tectonic plates boundaries yet experiences volcanism due to a rising mantle plume or some other cause
Answers: 3
You know the right answer?
The half life for the radioactive decay of potassium-40 to argon-40 is 1.26×109 years. Suppose nucle...
Questions
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 21.08.2020 02:01
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
English, 21.08.2020 02:01
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.08.2020 02:01
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 21.08.2020 02:01
![question](/tpl/images/cats/mat.png)