Предмет: Химия, автор: gunover

Задача. Вычислите массу меди,содержащейся в 1т минерала куприта (Cu₂O).

Ответы

Автор ответа: PlatinumBone
0

Дано:

m(Cu_2O)= 1тонна

Найти:

m(Cu) - ?

Решение:

1) Вычислим массовую долю меди в минерале: W(Cu)=M(Cu) / M(минерала)= 63 г/моль * 2 / 142 г/моль= 88,8%;

2)Составим пропорцию, где x (г.)- масса меди:

1тонна-100%

xтонн.-88,8%=> xг= 1тонна * 88,8% / 100%= 0.888 тонн.

Ответ: m(Cu)= 0.888 тонн. 

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