The melting point of a pure solvent is -116.3 C. If 352 g of an ionic solid is added to 567.7g of the solvent, the new melting point is -121.6 C. What is the molar mass of the ionic solute?
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Expert's answer
2019-02-25T08:21:04-0500
delta T = i•Kf•molality
Molality = moles / kg solvent
You have molality and kg solvent, solve for moles.
Moles = grams / molar mass. You have moles and grams, solve for molar mass.
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