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29 March, 16:11

Determine the mass of oxygen necessary to react with 2.3 moles of HCl

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  1. 29 March, 16:38
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    Balanced equation: 4HCl + O₂ → 2Cl₂ + 2H₂O

    mole ratio of HCl : O₂ is 4 : 1

    ∴ if moles of HCl = 2.3 mol

    then mol of O₂ = 2.3 mol : 4

    = 0.575 mol

    mass of O₂ = moles of O₂ * molar mass of O₂

    = 0.575 mol * (16 * 2) g/mol

    = 18.4 g
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