# Chapter 19 - Section 19.4 - Entropy and Energy Quality - Example - Page 354: 19.4

$52\ kJ$

#### Work Step by Step

We use known equations to find: $E_{unavailable}=nRTln(\frac{V_2}{V_1})$ $E_{unavailable}=(5)(8.314)(290)ln(\frac{152}{2})=52\ kJ$

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