객관식
Consider the phase diagram for carbon dioxide. At 1 atm pressure and room temperature (25 ^\(\circ\) C), what is the physical state of CO_2?
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객관식
What is the normal freezing point of this unknown substance?
A
0 °C
B
–200 °C
C
200 °C
D
400 °C
E
100 °C
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검증된 단계별 안내1
Identify the normal freezing point as the temperature at which the substance transitions from liquid to solid at 1 atm pressure.
Locate the horizontal dashed line on the graph that represents the pressure of 1.00 atm.
Find the point where the solid-liquid phase boundary intersects the 1.00 atm pressure line; this point corresponds to the normal freezing point.
Read the temperature value on the x-axis at this intersection point to determine the normal freezing point.
Note that the graph shows this intersection at approximately 100 °C, indicating the normal freezing point of the substance.
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