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प्रश्न
A gas made of a mixture of 2 moles of oxygen and 4 moles of argon at temperature T. Calculate the energy of the gas in terms of RT. Neglect the vibrational modes.
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उत्तर
For two moles of diatomic nitrogen with no vibrational mode,
U1 = `2 xx 5/2 "RT"` = 5 RT
For four mole of monatomic argon,
U2 = `4 xx 3/2 "RT"` = 6 RT
Total energy of the gas, U = U1 + U2
= 5 RT + 6 RT
U = 11 RT
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