The phase diagram for xenon has a solid-liquid curve with a positive slope. Which of the following is true?
A) Solid xenon has a higher density than liquid xenon.
B) Solid xenon has the same density as liquid xenon.
C) The phase diagram cannot be used to predict which phase of xenon is denser.
D) Freezing xenon is an endothermic process.
E) None of these choices is correct.

Question

Quizplus · Accepted Answer

The positive slope of the solid-liquid curve indicates that, unlike most substances, the solid phase of xenon has a higher density than the liquid phase.

The Phase Diagram for Xenon Has a Solid-Liquid Curve with a Positive