1.

Calculate H for the reaction:
N2 + 3H2 2NH3

A. n(The bond dissociation energy for N-N is 163 kJ/mol; H-H is 436 kJ/mol; N-H is 391 kJ/mol).
B. 867
C. 895
D. 847
E. 875
Answer» E. 875


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