101. Solving a chemistry problem
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6. Using the electron balance method and the electron-ion half-reaction method, place the coefficients in the following reaction equations:
K2Cr2O7 H2S H2SO4 → S Cr2(SO4)3 K2SO4 H2O
K2Cr2O7 H2S H2SO4 → S Cr2(SO4)3 K2SO4 H2O
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