1) a) if a sample of pure hydrogen gas is ignited very carefully, the hydrogen burns gently, combining with the oxygen gas of the air to form water vapor. write the unbalanced chemical equation for this reaction. (include states-of-matter under the given conditions in your answer.)

H₂ (g) + O₂ (g) ⇒ H₂O (g)

Explanation:

Hydrogen and oxygen gas both exist as diatomic molecules. The water is in gaseous state due to the heat given off by the combustion reaction.

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of carbon is as shown here in the image.