Determine the molecular formula of a compound with an empirical formula of NH2 and a formula mass of 64 g/mol. a-
N3H8
b-
NH3
c-
N4H8
d-
N2H8
e-
none of these

The third choice .. (:

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.

What? i don’t understand