Предмет: Химия, автор: nuwtsangster

Задача номер 2 мне срочно нужна пж

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Ответы

Автор ответа: sviatoslavmalyi

1

Ответ:63,54

Объяснение:

m(Cu)=((63•73)+(65•27))/100=(4599+1755)/100=63,54

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