To answer your question, you need to specify the type of acid you are interested in. For example, you could ask:
* What elements are in the compound hydrochloric acid?
* What elements are in the compound sulfuric acid?
Once you specify the acid, I can tell you the elements it contains.
Generally, acids contain:
* Hydrogen (H): All acids release hydrogen ions (H+) when dissolved in water.
* One or more nonmetal elements: The other elements in the acid depend on the specific acid.
Let me know the specific acid you're curious about, and I'll be happy to help!