This is is the common name for the aqueous cation h3o+, formed when a water molecule combines with the proton from a hydrogen atom.

Answer is: hydronium ion.
Chemical reaction: H⁺(aq) + H₂O(l) → H₃O⁺(aq).
Hydronium ion is positive ion present when an Arrhenius acid, for example hydrochloric acid (HCl(aq)) is dissolved in water, hydrochloric acid in solution give up a proton (a positive hydrogen ion, H⁺) to the surrounding water molecules (H₂O): HCl(aq) + H⁺(aq) → Cl⁻(aq) + H₃O⁺(aq).

Read the sentences below in 1962, i tried to enroll as the first black student at the university of mississippi. the governor of mississippi blocked my entrance which best describes the verbs used in the sentences? o they are past tense verbs, which are often used in narrative essays o they are past tense verbs, which are not often used in narrative essays. o they are future tense verbs, which are often used in narrative essays o they are future tense verbs, which are not often used in narrative essays.