Concept:The ideal gas law requires an absolute temperature scale.
Explanation:The ideal gas law is written as
PV=nRT.
In this equation,
T must be measured using an absolute temperature scale.
The Kelvin scale begins at absolute zero, where the kinetic energy of gas particles is minimal.
This makes
T in Kelvin directly proportional to the average kinetic energy of the gas particles.
Celsius and Fahrenheit are relative scales and can have negative values, which are not suitable for gas law calculations.
Rankine is also absolute, but Kelvin is the standard SI unit used for ideal gas calculations.
Answer:B. Kelvin (K)