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какая масса получится из 1,02 кг оксида алюминия если выход 70% а оксид содержит 20% примесей
Ответы 1
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находим массу чистого оксидаm=1.02-(1.02*20%/100%)=0.816 kg = 816 gвыход равен 816*70%/100%=571.2 gответ 571.2 г
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Автор:
jerseystokes - 6 лет назад
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