A:2N2(g)+O2(g)=2N2O(g) ΔH=+163 kJ·mol-1
B:Ag(s)+ 12 Cl2(g)=AgCl(s) ΔH=-127 kJ·mol-1
C:H2O2(l)= 12 O2(g)+H2O(l) ΔH=-98 kJ·mol-1
D:HgO(s)=Hg(l)+ 12 O2(g) ΔH=+91 kJ·mol-1
三大类岩石循环转化示意图,完成下列要求: