6naoh+3s=2na2s+na2so3+3h20 и окис и восст
c+2s=cs2
na2s+s=na2s2
6hno3+s=h2so4+6no2+2h2o
2h2so4+s=3so2+2h20
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6naoh+3s=2na2s+na2so3+3h20 и окис и восст
c+2s=cs2
na2s+s=na2s2
6hno3+s=h2so4+6no2+2h2o
2h2so4+s=3so2+2h20