Question

which of the following elements are in the compound: * carbonic acid h₂co₃ hydrogen (h) and cobalt (co) hydrogen (h), carbon (c), and oxygen (o) sodium (na) and helium (he)

Explanation:

Step1: Analyze the chemical formula

The formula of carbonic acid is \(H_2CO_3\).

Step2: Identify elements from symbols

In \(H_2CO_3\), \(H\) represents hydrogen, \(C\) represents carbon, and \(O\) represents oxygen. Cobalt (\(Co\)) is not present (as formula has \(C\) not \(Co\)), sodium (\(Na\)) and helium (\(He\)) are also not part of \(H_2CO_3\).

Answer:

Hydrogen (H), Carbon (C), and Oxygen (O)