Questions
The weight of iron which will be converted into its oxide ( ) by the action of 18 g of steam on it will be (Atomic weight of Fe = 56)
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a
168 g
b
84 g
c
42 g
d
21 g
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Correct option is C
3Fe + 4H2O → Fe3O4+4H23×56g 4× 18 g= 168 g = 72 g∵ 72 g steam required Fe = 168 g ∴ 18 g steam required Fe = 168×1872 = 42 gSimilar Questions
An oxide of iodine (I = 27) contains 25.4 g of iodine for 8 g of oxygen. Its formula would be
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