Given the following information AH; (H20 (1)) - 285.8 kJ/mol and AH; (HF(9) --273.3 kJ/mol
What is the AH° for the following reaction and is it exothermic or endothermic?
2 F2 (g) + 2 H2O (1) + 4 HF (g) + O2 (g)
-521.6 kJ and exothermic
-521.6 kJ and endothermic
+12.5 kJ and exothermic
+ 12.5 kJ and endothermic

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 answer is 65.3312