How many moles are in 8.2 x 10^24 particles of sodium bicarbonate (NaHCO3)?

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.

The correct answer should be "electrons orbit the nucleus in circular motions exactly as shown on the classic bohr model."