Here's how to determine the number of hydrogen atoms in ammonium carbonate:

1. Chemical Formula:

* Ammonium carbonate has the chemical formula (NH₄)₂CO₃.

2. Breakdown:

* (NH₄)₂: This indicates two ammonium ions (NH₄⁺).

* CO₃: This is the carbonate ion (CO₃²⁻).

3. Counting Hydrogen:

* Each ammonium ion (NH₄⁺) contains 4 hydrogen atoms.

* Since there are two ammonium ions, the total number of hydrogen atoms is 4 * 2 = 8.

Therefore, there are 8 hydrogen atoms in ammonium carbonate.