The Phase Diagram for Helium

question 128

Multiple Choice

The phase diagram for helium

• A) indicates that helium exists as He(g) and He(l) at about 2 K.
• B) indicates that helium exists only as a gas.
• C) has two triple points.
• D) indicates that helium can be liquefied at ordinary pressures.
• E) indicates that helium has three phases.

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