Ответ учителя по предмету Химия
140*0,005=0,7 г в-ва в 1м р-ре
200*0.03=6 г в=ва во 2м р-ре
140+200=340 г полученного р-ра
0,7+6=6,7 г в-ва в нём
6,7:340*100=1,97 %
140*0,005=0,7 г в-ва в 1м р-ре
200*0.03=6 г в=ва во 2м р-ре
140+200=340 г полученного р-ра
0,7+6=6,7 г в-ва в нём
6,7:340*100=1,97 %
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