4. Укажіть кiлькiсть записів, якими позначено три молекули речовини: 3CO, NO2, HNO3, 3Ь, 203, 302, 3C2H O2, HCIO, H2S, 3C. А 2 Б3 в 4 Г5 В 11
даю 20 баллов!!!​
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