Will mark brainiliest 1. the half-reaction 2mno2 + h2o + 2e- mn2o3 is missing a. electrons b. oh- ions c. mn2+ ions d. o2- ions 2. the oxidation number of s in so2−4 is a. 2 b. +2 c. +4 d. +6

Part 1 :

The option B is correct option.

The half-reaction 2MnO2 + H2O + 2e- Mn2O3 is missing OH- ions.

Explanation:

Full equation:

                         2MnO2 + H2O + 2e- → Mn2O3 + 2OH-

Part 2.

The oxidation number of S in SO2−4 is 0.

Because in ionic compounds sum of oxidation number is equal to charge.

If compound is SO4-2 then option d will correct option.

Because  (+6) + (-2 * 4) = -2

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.

Ithink that the answer is b