Какое количество вещества оксида железа (III) образуется при сгорании 140 г железа? - №31823140

Какое количество вещества оксида железа (III) образуется при сгорании 140 г железа?
- Предмет:
  Химия
- Автор:
  matiasayers
- 5 лет назад

Ответы 1

4Fe+3O2=2Fe2O3
n=m\M
n=140/56
n=2,5
2,5:4:X:2
n(Fe2O3)=1,25 моль
m=1,25x160=200 Г
- Автор:
  reid48
- 5 лет назад
- 0
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