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A. NH3(g)+O2(g) N2(g)+H2O(g) ¦¤H=-a kJ¡¤mol-1
B. C6H12O6(s)+6O2(g)6CO2(g)+6H2O(l) ¦¤H=-b kJ¡¤mol-1
C. C(s) +H2O(g) == CO(g)+H2(g) H=-c kJ¡¤mol-1
D. CH3CH2OH(l)+O2(g)CH3CHO(l)+H2O(l) ¦¤H=-d kJ¡¤mol-1
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