请你阅读上述材料,回答下列问题.•
配平下列化学方程式① (____ )Al+(____ )HCl-(____ )AlCl3+(____ )H2② (____ )Al+(____ )Fe3O4-(____ )Fe+(____ )Al2O3 ③(____ ) N2+(____ )H2-(____ )NH3④ (____ )C2H2+(____ )O2-(____ )H2O+(____ )CO2
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