Предмет: Химия, автор: Anna2209

Какая масса марганца может быть получена из 52.2 г оксида марганца в результате восстановления 40 г алюминия?

Ответы

Автор ответа: RomanUhnalev1997

Дано:

m(MnO)=52.2 г.

m(Al)= 40г

m(Mn)-?

3MnO + 2Al = Al2O3 + 3Mn

n(MnO)= 52.2/ 71 = 0.7

n(Mn) = 0.7*3/3=0.7

m(Mn)= 0.7*55=38.5

Ответ:38,5

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True False [1]

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True False [1]

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True False [1]

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True False [1]

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True False [1]

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