а) MgCl2 (1*2+2*(-1)) = 0
б) Al2S3 (2*3+3*(-2)) = 0
в) Na2SO4 (2*1 + 1*6 + 4*(-2)) = 0
г) KOH (1*1 + 1*(-2) + 1*1) = 0
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а) MgCl2 (1*2+2*(-1)) = 0
б) Al2S3 (2*3+3*(-2)) = 0
в) Na2SO4 (2*1 + 1*6 + 4*(-2)) = 0
г) KOH (1*1 + 1*(-2) + 1*1) = 0