Sun December 11, 2011 By: Swarnalakshmi Murugan


Expert Reply
Sun December 11, 2011
a. 3/2RT
The average energy will be (1/2)kT per type of motion.
So, three types of motion will yield (3/2)kT, where k is a constant.
We have 1 mole of molecules.
Multiplying k by 6.022 x 10^23 (the number of molecules in a mole) yields the constant R. Therefore, the internal energy of one mole of molecules of an ideal gas is (1/2)RT x the number of types of motion each molecule can undergo.
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