O_2 and H_2 are the same gas at what temperature?

1 Answer
Dec 17, 2016

They cannot be the same gas at any temperature.

Explanation:

"O"_2" and "H"_2" are pure substances. They are diatomic elements and will never be the same gas at any temperature. They can chemically combine with one another to form the compound water, "H"_2"O", but that is a compound with very different properties compared to "O"_2" and "H"_2".