We’re asked to draw the phase diagram of gallium to determine its unusual feature based on the given information:
Recall that a phase diagram shows the transition of matter between solid, liquid, and gas phases as temperature and pressure changes.
At 25 gallium is a solid with a density of 5.91 g/cm3. Its melting point, 29.8 , is low enough that you can melt it by holding it in your hand . The density of liquid gallium just above the melting point is 6.1 g/cm3.
Based on this information, what unusual feature would you expect to find in the phase diagram of gallium?
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