Determine the mass in grams of 7.63 × 10²¹ atoms of arsenic. (The mass of one mole of arsenic is 74.92 g.)

Ethene molecular fórmula= c2h4molecular weight = 29.046g/molhope it : )

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.