Write the formulas of acid oxides corresponding to boric, manganese, sulfuric, hydrogen sulfide

Write the formulas of acid oxides corresponding to boric, manganese, sulfuric, hydrogen sulfide, nitric, orthopomphoric, acids.

Acidic oxides are called oxides from which, when interacting with water, oxygen-containing acid can be obtained. Therefore, these oxides are called anhydrides. This list contains anoxic acid – H2S – hydrogen sulfide, so it does not have the corresponding oxide. The oxidation state of the element in the oxide and the corresponding acid is the same.
Boric acid – H3BO3, oxide – B2O3; manganese – H2MnO4, oxide – MnO3; sulfuric – H2SO4, oxide – SO3; nitric – HNO3, oxide – N2O5; orthophosphoric – Н3РО4, oxide – Р2О5.