Of the following, AH°† is not zero for Si (s) Sc (g) O P4 (s, white) Ca (s) O Br2 (1)

Consider the following data. 2 H₂0 (1) 2 H₂(g) + O₂(g) 2 HNO3(1) = N₂05(9) + H₂O(1) 2 HNO30 (1) ⇒ N₂(g) + 3 O₂(g) + H₂(g) Use Hess's law to calculate AH for the reaction below. ΔΗ= |1083.8 AH = +571.7 kJ AH = +92.0 kJ AH = +348.2 kJ x kJ 2 N₂05(9) 2 N₂(g) + 5 O₂(g)

Given the following processes and their enthalpy values::            Reaction/Process                   Delta_H (enthalpy)             Li(s)  -->  Li(g)                             159 kJ             Li(g)  -->  Li+(g)  +  e–                 520. kJ             Cl2(g)  -->  2Cl–(g)                      242 kJ             Cl(g)  +  e–  -->  Cl(g)                  -349 kJ             LiCl(s)  -->  Li+(g) +  Cl–(g)           853 kJ          ----------------------------------------------------------------------------------          Calculate the enthalpy of formation of LiCl(s) (in kJ/mol) according to the following equation:             Li(s)  +  ½ Cl2(g)  -->  LiCl(s)  (C 4)          (A)  1425          (B)  1204          (C) -402          (D) -281

Calculate the predicted enthalpy of reaction, AH°rxn, for nitrous oxide production. (the equation below is unbalanced). (In reality, MnO»Br2O3 is used as a catalyst, but does not need to be included in your calculations) C3H3 + H2O + CO2