Ответ:
CaSO4 +6 (+2/X/-2) -2*4+X+2=0 X=+6
H2S -2 (+1/X) 1*2+X=0 X=-2
Al2S3 -2 (+3/X)=3*2+X*3=0 X=-2
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Ответ:
CaSO4 +6 (+2/X/-2) -2*4+X+2=0 X=+6
H2S -2 (+1/X) 1*2+X=0 X=-2
Al2S3 -2 (+3/X)=3*2+X*3=0 X=-2