(solution) `That nasty rotten egg smell is not actually gaseous sulfur, but

(solution) `That nasty rotten egg smell is not actually gaseous sulfur, but

`That nasty rotten egg smell is not actually gaseous sulfur, but rather hydrogen sulfide, or more properly named hydrosulfuric acid. It is heavier than air, too, so it tends to stick around for a while to share its delectible aroma. One mole of this compound would contain:

 A.2 moles of hydrogen.
 B.2 moles of sulfur.
 C.1 mole of hydrogen.
 D.4 moles of oxygen.
 E.4 moles of sulfur