What mass of Fe₂O3 is produced when 21.9 L of O₂ gas react with FeS at 433 K and 3.92 atm. 4 FeS(s) +70₂(g) → 2 Fe₂O3(s) + 4 SO₂(g) First, use the ideal gas equation to calculate the moles of O₂. n = Then, calculate the mass of Fe₂O3 from the moles of O₂. Show the conversions required to solve this problem. mol O₂ x 2 mol Fe₂O3 1 mol Fe₂O3 64.06 g SO₂ 4 mol FeS Answer Bank 32.00 g 0₂ 1 mol O₂ 4 mol SO₂ 1 mol SO₂ 1 mol Fes 7 mol O₂ 87.91 g FeS mol O₂ 159.69 g Fe₂O3 = g Fe₂O3

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.