## 4C 3

$w=-P\Delta V$
and
$w=-\int_{V_{1}}^{V_{2}}PdV=-nRTln\frac{V_{2}}{V_{1}}$

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### 4C 3

Can somebody explain why for part A we would say that there is no work done to the system but for part B we would use nRT as the work portion of the enthalpy equation?

Chem_Mod
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### Re: 4C 3

Please provide the background of the problem, don't just give the problem number. Thanks.