Question : The average kinetic energy of the molecules of an ideal gas is directly proportional to:
Option 1: velocity of molecules
Option 2: mass of molecules
Option 3: absolute temperature of the gas
Option 4: temperature of environment
Correct Answer: absolute temperature of the gas
Solution : The correct option is absolute temperature of the gas.
An ideal gas's average molecular kinetic energy (KE) is directly proportional to its temperature (T), expressed in Kelvin. The average kinetic energy of molecules in an ideal gas increases with temperature and vice versa, providing all other variables remain constant.
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