What is absolute zero in Celsius?

Absolute zero is defined as the theoretical lowest temperature possible, at which all atomic motion ceases. It is equivalent to 0 Kelvin in the Kelvin scale, which is the standard unit of measurement for temperature in physical sciences. To convert this temperature to Celsius, you can use the formula:

[ \text{Temperature in Celsius} = \text{Temperature in Kelvin} - 273.15 ]

Since absolute zero is 0 Kelvin, the corresponding temperature in Celsius is:

[ 0 , \text{K} - 273.15 = -273.15 , \text{°C} ]

For many practical purposes, -273.15 °C is rounded to -273 °C, which is the accepted value for absolute zero in the Celsius scale. This concept is crucial in fields like thermodynamics and cryogenics, where understanding the limits of temperature is essential for studying matter and energy behavior.

The other options do not represent absolute zero correctly. -459°C is a temperature below absolute zero, which is not physically meaningful in the context of thermodynamics. 0°C is the freezing point of water, and -100°C is a temperature significantly above absolute zero. Thus, -273°C accurately represents the concept of