## 9.47

$\Delta U=q+w$

donnanguyen1d
Posts: 64
Joined: Fri Sep 29, 2017 7:04 am

### 9.47

How can delta S total have a value if delta S surroundings is 0? If there isnt any heat transferred into surroundings and the entropy is unchanged then what does the delta S total numeric value stand for conceptually?

Matthew Lee 3L
Posts: 51
Joined: Fri Sep 29, 2017 7:07 am

### Re: 9.47

The delta s would come from the system itself.

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