The lowest temperature possible. Equal to 0 K or -273.15 °C
The temperature at which the molecules in a substance have zero kinetic energy
θ / °C = T / K − 273.15
T / K = θ / °C + 273.15
Conversion chart relating the temperature on the Kelvin and Celsius scales
A change in a temperature of 1 K is equal to a change in temperature of 1 °C
Q = mcΔθ
In many ideal gas problems, room temperature is considered to be 300 K.What is this temperature in Celsius?
Step 1: Kelvin to Celsius equation
θ / °C = T / K − 273.15
Step 2: Substitute in value of 300 K
300 K − 273.15 = 26.85 °C
If you forget in the exam whether it’s +273.15 or −273.15, just remember that 0 °C = 273.15 K. This way, when you know that you need to +273.15 to a temperature in degrees to get a temperature in Kelvin. For example: 0 °C + 273.15 = 273.15 K.
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