Described in detail in the previous paper,33 the water liquid−
vapor system is generated by boiling a sample of water in a
small Erlenmeyer flask for an amount of time sufficient to drive
off the air in the flask, sealing the flask, and then cooling it to
room temperature. Pulling back the plunger of the attached
syringe in both the liquid−vapor system and in a similar setup
containing only air allows students to investigate how changing
volume affects the pressure of both systems. An example of
typical data collected, shown in Table 4, reveals that the
pressure in the liquid−vapor system is relatively independent of
the syringe volume, whereas the pressure in the air-only system
is highly dependent on the syringe volume or applied pressure.
Described in detail in the previous paper,33 the water liquid−
vapor system is generated by boiling a sample of water in a
small Erlenmeyer flask for an amount of time sufficient to drive
off the air in the flask, sealing the flask, and then cooling it to
room temperature. Pulling back the plunger of the attached
syringe in both the liquid−vapor system and in a similar setup
containing only air allows students to investigate how changing
volume affects the pressure of both systems. An example of
typical data collected, shown in Table 4, reveals that the
pressure in the liquid−vapor system is relatively independent of
the syringe volume, whereas the pressure in the air-only system
is highly dependent on the syringe volume or applied pressure.
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