Предмет: Химия, автор: aktilektaskyn

2. а) Определите массовую долю меди в минерале куприт CuFeS2

Ответы

Автор ответа: chemistrycrush

3

M(CuFeS2)=64+56+32*2=184 г

w(Cu)=64/184*100%≈35%

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Yuri Gagarin was the first cosmonaut in the world. Yuri Alexeyevich Gagarin was
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2 модель. did + подлежащее + глагол в 1 форме + второстепенные
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