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+2 + S = 0
S = -2
2. H2SO4 = 0
+2 + S + (-8) = 0
S = +6
3. Na2S2O3 = 0
+2 + 2S + (-6) = 0
2S = +4
S = +2
+1(2) + S = 0
+2 + S = 0
S = -2
2. H2SO4
+1(2) + S + (-2)(4) = 0
+2 + S - 8 = 0
S = + 6
3. Na2S2O3
(+1)(2) + 2S + (-2)(3) = 0
+2 + 2S - 6 = 0
2S = +4
S = +2