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FeS(s)+3NO3-(aq)+4H+(aq)--gt;3NO(g)+SO4-2(aq)+Fe3+(aq)+2H2O(l) reducing agent and oxidizing agent
FeS(s)+3NO3-(aq)+4H+(aq)-->3NO(g)+SO4-2(aq)+Fe3+(aq)+2H2O(l) reducing agent and oxidizing agent