Consider the temperature versus time graph below.
A graph of temperature versus time has time on the horizontal axis and temperature in degrees Celsius from negative 20 to 140 on the vertical axis. A line extends through the following points: 0, negative 10; 4, 0; 7, 140; 18, 120; 19, 125.
At what temperature is the boiling point of this substance?
at 0°C
between 0°C and 100°C
at 120°C
above 120°C
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