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Ответы на вопрос:

ladomix

Химия

4,6(16 оценок)

H2so4+zn=znso4+h2 m(h2so4)=49%*200г/100%=98г n(h2so4)=m/m=98/98=1 моль n(h2)=n(h2so4)=1 моль m(h2)=1*2=2 г v(h2)=1*22.4=22.4 л

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