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Calculate the AHxn of Cgraphite) (diamond) based on the following reactions: A) Cgraphite) + 02 (g) CO2 (g) AH = -394 kJ B) diamond) + 02 (g) CO2 (g) AH = -396 kJ Calculate the AHrxn of 2C,H, (g) + 702 (g) 4CO2 (g) + 6H20 (g) based on the following reactions: A) 2C(s) + 3H2 (g) CH. (g) AH = -84.7 kJ B) C(s) + O2(g) CO2 (g) AH = -393.5 kJ C) H2(g) + 1/2O2(g) H2O(g) AH = -242 kJ