Consider a gas of triatomic molecules. The molecules are assumed to be

1.	Consider a gas of triatomic molecules. The molecules are assumed to be triangular and made of massless rigid rods whose vertices are occupied by atoms. The internal energy of a mole of the gas at temperature T is(1) 3RT(2) \(\frac{9}{2}\) RT (3) \(\frac{3}{2}\) RT (4) \(\frac{5}{2}\) RT
Answer» (1) 3RT U = \(\frac{nfRT}{2}\) f = 6 (for triatomic) ⇒ U = 3RT

Consider a gas of triatomic molecules. The molecules are assumed to be triangular and made of massless rigid rods whose vertices are occupied by atoms. The internal energy of a mole of the gas at temperature T is(1) 3RT(2) \(\frac{9}{2}\) RT (3) \(\frac{3}{2}\) RT (4) \(\frac{5}{2}\) RT

Answer»

(1) 3RT

U = \(\frac{nfRT}{2}\)

f = 6 (for triatomic)

⇒ U = 3RT

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Consider a gas of triatomic molecules. The molecules are assumed to be triangular and made of massless rigid rods whose vertices are occupied by atoms. The internal energy of a mole of the gas at temperature T is(1) 3RT(2) \(\frac{9}{2}\) RT (3) \(\frac{3}{2}\) RT (4) \(\frac{5}{2}\) RT

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