What is the value of absolute zero in Celsius?

Absolute zero is the theoretical temperature at which all molecular motion ceases. In the Celsius scale, this point is defined as -273.15 degrees Celsius, which is often rounded to -273 for simplicity in many contexts. This value represents the lowest limit of the thermodynamic temperature scale, which is significant in both physics and thermodynamics.

At absolute zero, substances would possess minimal energy, and it is the baseline for measuring the temperature of materials. The concept is essential in understanding temperature scales and the behavior of gases and other substances at low temperatures.

The other values provided, such as -100, 0, and -50 degrees Celsius, do not correspond to absolute zero and are simply points on the Celsius scale that represent much higher temperatures in comparison to absolute zero.