Is an ammonium an acid or s base?
Is it strong or weak?
Is it a weak, acid?
2 answers
https://chemistry.stackexchange.com/questions/51236/is-ammonium-a-strong-or-weak-conjugate-acid
Avery, you need to understand that ammonium is nothing; however, ammonium ION is. As the site Bob Pursley directed you to shows you, ammonium ion (NH4^+) is a weak acid.
NH4^+ + HOH ==> NH3 + H3O^+ because NH4^+ donates a H^+ to the H2O.
NH4^+ + HOH ==> NH3 + H3O^+ because NH4^+ donates a H^+ to the H2O.