A container of fixed volume has a mixture of one mole of hydrogen and one mole of helium in equilibrium at temperature T . Assuming the gases are ideal, the correct statement(s) is (are)

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C V m i x = 1 3 2 R + 1 5 2 R 2 = 2 R C P m i x = 3 R γ m i x = 3 2 ⇒ f = 4 Average energy/mole = f 1 2 R T = 2 R T V s o u n d m i x t u r e V s o u n d H e = R T 2 5 R T 12 = 6 5 V r m H e V r m s H 2 = 3 R T 4 3 R T 2 = 1 2

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