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Calculate AH2.980 (in kJ) for the process P(s) + 5/2 Cl2(g) -> PCI5(g) from the following information. P(s) + 3/2 Cl2(g) -> PCI3(g) AH2980 0 = -287 kJPCI3(g) + Cl2(g) -' PCI5(g) AH298 = -88 kJ