The Ideal Gas Law (PV = nRT) relates pressure, volume, moles of gas, and temperature through the gas constant R, describing the proportional relationships among these state variables for an ideal gas. Because the law depends on absolute thermal energy, temperature must be expressed on the absolute (Kelvin) scale rather than Celsius, since Kelvin sets zero at absolute zero—the point of minimal molecular kinetic energy—while Celsius is an arbitrary scale anchored to water's freezing and boiling points. This concept belongs to chemistry/thermodynamics, specifically the kinetic theory of gases, and represents the application of unit-consistent proportionality constants and temperature-scale conversion within gas-law calculations.
The Ideal Gas Law (PV = nRT) relates pressure, volume, moles of gas, and temperature through the gas constant R, describing the proportional relationships among these state variables for an ideal gas…