Determine the enthalpy of the reaction given the following information (show calculations and changes made to each reaction):
2B_(2)O_(3)(s)->4B(s)+3O_(2)(g)
A.
B_(2)O_(3)(s)+3H_(2)O(g)->3O_(2)(g)+B_(2)H_(6)(g),\Delta H\deg =+2305kJ
B.
2B(s)+3H_(2)(g)->B_(2)H_(6)(g),\Delta H\deg =+36kJ
C. D.
H_(2)O(l)->H_(2)O(g),\Delta H\deg =+47kJ