The rate constant for a particular second-order reaction is 0.47 M-1sec-1. If the initial concentration is 0.25 M, how much time is needed for a concentration to decrease to 0.13 M?

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.

Anions are negative charged ions