7- Given the following data: 2H2 (g) + C (s) → CH4 (g) 2H2 (g) + O2 (g)→ 2H2O (I) C (s) + O2 (g) –→ CO2 (g) AG° = -51 kJ AG° = -474 kJ AG° = -394 kJ Calculate AG° for CH4 (g) + 202 (g) → CO2 (g) + 2H2O (I) .

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