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Ce masa de fier se gaseste in 300g amestec FeO si Fe2O3, daca cei doi oxizi se gasesc in raport molar 2:1 Dau coroana

Răspuns :

Moonlight01
x = FeO
y = Fe2O3

x+y = 300

x/y = 2/1 => x =2y

3y = 300 =>  y = 100g Fe2O3
x = 200g FeO

160g Fe2O3................112g Fe
100g Fe2O3.................x = 70g Fe

72g FeO...................56g Fe
200g FeO.................x = 155,55g Fe

m Fe total = 70+155,55 = 225,55g 

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