2 hydrogen atoms hope this helps
I believe it’s conductivity
Answer:
false
Explanation:
Hope the answer was usefull for us
All are gases so no visible reaction persay, unless in closed quarters and then massive pressure.
Answer:

Explanation:
Temperature and thermal energy are in a direct proportion which means that if temperature of a substance increases, its thermal energy also increases and vice versa.
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Hope this helped!
<h3>~AH1807</h3>