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The first distillation was done on a day when the pressure was 760 mmHg . The...

The first distillation was done on a day when the pressure was 760 mmHg . The boiling point (the range where we saw drips come over) was 69 oC. (This is the normal boiling point ) Then you connected the adapter to a vacuum. The manometer shows the pressure is now 420 mmHg. The liquid now boils at 32 oC. What is the enthalpy of vaporization in kJ/mol?

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