The phase diagram for helium-4 indicates that
A) helium has three phases.
B) helium has two liquid phases.
C) helium can be liquefied at ordinary pressures.
D) helium exists as He(g) and He(l) at about 2 K.
E) helium exists only as a gas.

Question

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The Answer of The phase diagram for helium-4 indicates that
A) helium has three phases.
B) helium has two liquid phases.
C) helium can be liquefied at ordinary pressures.
D) helium exists as He(g) and He(l) at about 2 K.
E) helium exists only as a gas.

The Phase Diagram for Helium-4 Indicates That