<em><u>Answer:</u></em>
Potassium.
<u><em>Explanation:</em></u>
Therefore, the answer is Potassium. You might think, that because we were talking about Argon as well, the answer is both of them, but no. Everything starts with Potassium but it decays into Argon during the process.
Answer:
<h2>8.03 g/mL</h2>
Explanation:
The density of a substance can be found by using the formula

From the question we have

We have the final answer
<h3>8.03 g/mL</h3>
Hope this helps you
Sodium chloride, methane gas and water