Here's how to figure out the number of ions in ammonium sulfate:

1. Chemical Formula:

Ammonium sulfate has the chemical formula (NH₄)₂SO₄.

2. Dissociation:

When ammonium sulfate dissolves in water, it dissociates into its ions:

* 2 ammonium ions (NH₄⁺)

* 1 sulfate ion (SO₄²⁻)

3. Total Ions:

Therefore, there are a total of 3 ions in ammonium sulfate.