Equilibrium in Physical and Chemical Processes

The phase diagram for a pure substance is shown above. Use this diagram and your knowledge about changes of phase to answer the following questions.
The phase diagram for a pure substance is shown above. Use this diagram and your knowledge about changes of phase to answer the following questions.
The phase diagram for a pure substance is shown above. Use this diagram and your knowledge about changes of phase to answer the following questions.
At constant pressure, a sample of helium gas has a volume of $$800ml$$ at $${27}^{o}C$$
At constant pressure, a sample of helium gas has a volume of $$800ml$$ at $${27}^{o}C$$