Н2S+Cu- CuS+H2
2NaOH+H2S-Na2S+2H2O
PB(NO3)2+H2S-PBS+2HNO3
3HNO3+Al-Al(NO3)3+H2
MgO+2HNO3-MG(NO3)2+H20
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Н2S+Cu- CuS+H2
2NaOH+H2S-Na2S+2H2O
PB(NO3)2+H2S-PBS+2HNO3
3HNO3+Al-Al(NO3)3+H2
MgO+2HNO3-MG(NO3)2+H20