Объяснение:
w2(CH3COOH)=m1(CH3COOH)×w1(CH3COOH) ×100% ÷ (m1(CH3COOH)+ m(H2O))= 20×0.85×100%÷(20+480)=3.4%
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Объяснение:
w2(CH3COOH)=m1(CH3COOH)×w1(CH3COOH) ×100% ÷ (m1(CH3COOH)+ m(H2O))= 20×0.85×100%÷(20+480)=3.4%