Предмет: Химия, автор: veraXomka98

При взаимодействии железа и 26 кг сульфата меди образовалась медь и сульфат железа. Вычислить массу образовавшегося сульфата железа

Ответы

Автор ответа: Vopoxov
1

Ответ:

24,7 кг сульфата железа FeSO4

Объяснение:

Дано:

m (CuSO4) = 26 kg

Fe + CuSO4 = FeSO4 + Cu

--------------------

m(FeSO4) - ?

=====================

M(FeSO4) = 152 g/mol(= 152 kg/kmol)

M(CuSO4) = 160 g/mol(= 160 kg/kmol)

160kg/kmol <=> 152 kg/kmol

CuSO4 + Fe = FeSO4 + Cu

26 kg <=====> x kg

160/26 = 152/x

x =  \frac{152 \times 26}{160}  =  \frac{3952}{160}  = 24.7kg


veraXomka98: где 160 кг/кмоль и 152 кг/кмоль там умножается или сравнивается? Какой знак должен стоять?
Vopoxov: Там знак равносильности. 160 должно стоять над CuSO4, a 152 - над FeSO4. А между ними ничего ставить необязательно
Vopoxov: 160 над, 26 - под CuSO4, 152 над, х - под FeSO4
Vopoxov: это дает пропорцию 160/26 = 152/х
veraXomka98: это я поняла, Спасибо большое
veraXomka98: слушай поможешь решить еще несколько задачек???
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