The special significance of –97 °C for the gas is that it is the condensation point of the gas. At this temperature, the gas transitions to a liquid phase, stopping the decrease in temperature while heat is still being removed.
A phase change diagram shows the temperature and heat of an unknown gas. As the gas cools down, its temperature gradually drops. At –97 °C, the temperature stops decreasing even though heat is still being removed.
What is special about –97 °C for this gas?
Responses
It is the temperature at which the gas becomes another substance.It is the temperature at which the gas becomes another substance.
It is the temperature at which the gas breaks down.It is the temperature at which the gas breaks down.
It is the condensation point of the gas.It is the condensation point of the gas.
It is the freezing point of the gas
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