Here's how to determine the number of hydrogen atoms in ammonium hydroxide (NH₄OH):

* Ammonium Ion (NH₄⁺): This ion contains 4 hydrogen atoms.

* Hydroxide Ion (OH⁻): This ion contains 1 hydrogen atom.

Total Hydrogen Atoms: 4 + 1 = 5

Therefore, there are 5 hydrogen atoms in a molecule of ammonium hydroxide (NH₄OH).