State ice cream makers use ice to cool a concentrated nacl

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Home ice cream makers use ice to cool a concentrated NaCl solution below the normal freezing point of water. What molal concentration of salt is needed to lower the freezing point to -3.97 C? Assume that the solution is ideal, and that the van't Hoff factor for NaCl is the expected (ideal) value.

Reference no: EM13214347

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