chem

How many moles of ethylene glycol must be dissolved in 500 g of water (Kf = 1.86) to lower the freezing point to -5.00 0C?

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  1. delta T = Kf*molality
    Plug in 5.00 C for delta T, 1.86 for Kf and calculate molality.
    Then molality x kg solvent x molar mass = grams.
    You know molality, kg solvent, and molar mass. Calculate grams.

    Post your work if you get stuck.

    1. 👍
    2. 👎
  2. delta T = Kf*molality
    Plug in 5.00 C for delta T, 1.86 for Kf and calculate molality.
    Then molality x kg solvent x molar mass = grams.
    You know molality, kg solvent, and molar mass. Calculate grams.

    molar mass? where did u got the molar mass from ?

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  3. answered above.

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