неверно C)CrO+2NaOH ->Na2CrO2+H2O
должно бить CrO2 2NaOH ->Na2CrO2+H2O
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неверно C)CrO+2NaOH ->Na2CrO2+H2O
должно бить CrO2 2NaOH ->Na2CrO2+H2O