What is hydrogen (H2)?
What is hydrogen (H2)?. a. It is a colorless, explosive gas with a foul odor. b. It is a colorless, odorless and tasteless, explosive gas. c. It is a colorless, odorless, tasteless, non-explosive gas. d. It is a colorless, odorless, tasteless, poisonous gas. How is hydrogen formed in a mine?.
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