Direction:Solve for the standard Gibbs Free Energy of the following problems and show complete solution.

The old camera flash bulb used Mg metal sealed in a bulb with oxygen. At 25ºC, the reaction is:

Mg(s)+ ½ O2(g) →MgO(s)

ΔS (J/K.mol): Mg=32.7; O2=205.0; MgO=26.9ΔH (kJ/mol): Mg=0; O2=0; MgO=-601.2