![subject](/tpl/images/cats/himiya.png)
Chemistry, 28.06.2021 01:50 trobbie817
Select the correct answer.
A sample taken from a layer of mica in a canyon has 2.10 grams of potassium-40. A test reveals it to be 2.6 billion years old. How much
potassium-40 was in the sample originally if the half-life of potassium-40 is 1.3 billion years?
O A.
4.20 g
O B.
8.40 g
O C.
12.6 g
• D.
16.8 g
O E.
25.2 g
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Other questions on the subject: Chemistry
![image](/tpl/images/cats/himiya.png)
Chemistry, 21.06.2019 16:20, maevemboucher78
Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction: 2al(s)+3cl2(g)→2alcl3(s) what is the maximum mass of aluminum chloride that can be formed when reacting 32.0 g of aluminum with 37.0 g of chlorine? express your answer to three significant figures and include the appropriate units.
Answers: 2
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 04:00, fantasticratz2
Acontainer holds 35.8 moles of gas under 10.0 atm of pressure at 70.0 c. what is the volume of the container?
Answers: 2
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 14:00, Killion2022
Anthracite is so hard and pure it is also referred to as a renewable resource metamorphic rock hot bituminous coal dirty fuel
Answers: 1
![image](/tpl/images/cats/himiya.png)
You know the right answer?
Select the correct answer.
A sample taken from a layer of mica in a canyon has 2.10 grams of potass...
Questions in other subjects:
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/fizika.png)
Physics, 26.12.2020 16:00
![Konu](/tpl/images/cats/istoriya.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 26.12.2020 16:00
![Konu](/tpl/images/cats/informatica.png)
Computers and Technology, 26.12.2020 16:00
![Konu](/tpl/images/cats/fr.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 26.12.2020 16:00
![Konu](/tpl/images/cats/himiya.png)
Chemistry, 26.12.2020 16:00