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1. what is triangle Tf if the freezing point of a pure water is 0 C and the freezing point of a solution of salt

1. what is triangle Tf if the freezing point of a pure water is 0 C and the freezing point of a solution of salt water is -10 C?

2. how many moles of solute are in a solution of 450g solvent if the morality was determined to be 0.23 mol/kg? assume van't hoff factor is 1.

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