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17 June, 09:20

Determine the molality of an aqueous solution prepared by dissolving 0.112 moles of licl in 13.7 moles of h2o.

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  1. 17 June, 12:01
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    Molality is 0.45 mol/kg for the LiCl

    Explanation:

    Molality → Moles of solute in 1kg of solvent

    Let's convert the moles of solvent, water to mass (g)

    Afterwards we need to convert the mass from g to kg

    Molality → mol / kg

    First step: 13.7 mol. 18 g / 1mol = 246.6 g

    2nd step: 246.6 g. 1kg / 1000 g = 0.2466 kg

    Molality → mol/kg → 0.112 moles / 0.2466 kg → 0.45 molal
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