121. Solving a chemistry problem
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121. Solving a chemistry problem
119. Reactions Nos. 19, 44, 69,
Select the coefficients in the schemes of redox reactions. Specify the oxidizing agent and reducing agent.
19. Ag HNO3 = AgNO3 NO2 H2O
44. H2C2O4 KMnO4 = CO2 K2CO3 MnO2 H2O
69. H2O2 KMnO4 HNO3 = Mn(NO3)2 O2 KNO3 H2O
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