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The melting point of potassium is 62.2 oC. Molten potassium has a vapor pressure of 10.00...

  1. The melting point of potassium is 62.2 oC. Molten potassium has a vapor pressure of 10.00 torr at 433oC and 400 torr at 708 oC. R=8.314 J/(K-mol).
    1. How much heat is needed to vaporize 28.5 g of the potassium liquid?
    2. What is the heat of vaporization of liquid potassium?
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