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Sagot :
Answer: Fe2O3
Explanation:
100 grams of iron ore = 30.06% oxygen
100 - 30.06 = 69.94% iron
Mr of Iron = 55.85
Mr of Oxygen = 16
Iron = 69.94/55.85 = 1.252
Oxygen = 30.06/16 = 1.879
1.879 / 1.252 = 1.5 of Oxygen
1.252/1.252 = 1 of Iron
we can write that as Fe1O1.5 but we can't use decimals therefore we have to multiply the whole thing by 2
So it comes out to be Fe2O3
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