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Maybebaby
@Maybebaby
July 2022
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Каково содержание ( в процентах) железа в оксидах, формулы которых FeO, Fe2O3, Fe3O4
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httpnata1999
Вот решение............
2 votes
Thanks 6
JulikaVas
FeO
72-100%
56 - x%
72x=5600
x=78%
Fe2O3
160-100%
112-x%
160x=11200
x=70%
Fe3O4
232-100%
168-x%
232x=16800
x=72%
1 votes
Thanks 3
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Answers & Comments
72-100%
56 - x%
72x=5600
x=78%
Fe2O3
160-100%
112-x%
160x=11200
x=70%
Fe3O4
232-100%
168-x%
232x=16800
x=72%