From the vapor pressure curve of propane, it can be seen that the normal boiling point of propane is about _________.

Name: From the vapor pressure curve of propane, it can be seen that the normal boiling point of propane is about _________.
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Question

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According to the vapor pressure curve of propane, the normal boiling point of propane is where the vapor pressure curve intersects with the standard pressure line of 1 atm. This occurs at approximately -42°C, which corresponds to choice D.

From the Vapor Pressure Curve of Propane, It Can Be