The Carbonic acid and Chromium (II) hydroxide equation is what?

Ibelieve its a because an empirical formula usually has a ch in it your options are a or b

The answer is b metal denting

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.