A gas mixture consists of 2.0 moles of oxygen and 4.0 moles of neon at temperature T. Neglecting all vibrational modes, calculate the total internal energy of the system. (Oxygen has two rotational modes.)
A gas mixture consists of 2.0 moles of oxygen and 4.0 moles of neon at temperature T. Neglecting all vibrational modes, calculate the total internal energy of the system. (Oxygen has two rotational modes.)
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1 Answer
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This is a short answer type question as classified in NCERT Exemplar
Oxygen gas having 5 degrees of freedom
Energy per mole of the gas =5/2RT
For 2 moles of the gas total internal energy =2 5/2RT=5RT
Neon is a monoatomic gas having 3 degrees of freedom
Energy per mole =3/2RT
We have 4 moles of Ne
Energy = 4 3/2RT=6RT
Total energy =5RT+6RT=11RT
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