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最佳答案:2Al+2NaOH+2H2O=2NaAlO2+3H2
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最佳答案:S+H2=加热=H2S2Na+S=加热=Na2S2Al+3S=加热=Al2S3Fe+S=加热=FeSS+O2=点燃=SO2
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最佳答案:1.C+O2=CO2S+O2=SO22P+5O2=2P2O53Fe+2O2=2Fe3O42Mg+O2=2MgO2Cu+O2=2CuO2H2+O2=2H2O(条件
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最佳答案:2Mg+O2=2Mg02HgO=2Hg+O22Al+3H2SO4=AL2(SO4)3+3H22C2H2+5O2=4CO2+2H2O