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According to Hill and Lounasmaa, the equation of the 4He inversion curve is
P = -21.0 + 5.44T - 0.132T2,
where P is given in atmospheres.
(a) What is the maximum inversion temperature?
(b) What point on the inversion curve has the maximum pressure?
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The standard enthalpy change for a process is 6.01 kJ/mol. What is the minimum value for the standard entropy change if the process is spontaneous
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