An iron ore is known to contain 70.0% Fe2O3. The obtain from 80kg of the…

An iron ore is known to contain 70.0% Fe2O3. The obtain from 80kg of the ore is?
(Fe = 56, O = 16)
  • A.
    35.0 kg
  • B.
    39.2 kg
  • C.
    70.0 kg
  • D.
    78.4 kg
Correct Answer: Option B
Explanation

2Fe2O3 → 4Fe + 3O2
320g 224g 96g
(70) / (100) x (80) / (1) 56g
if 0.32kg of Fe293 contains 0.224 kg
Then 56kg will contain (56 x 0.224) / (0.32) =39.2 kg

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