## 2009 Midterm Question #2 Part C

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### 2009 Midterm Question #2 Part C

Question #2 part C of the 2009 midterm asks what the change in internal energy is for the combustion reaction of 2 moles of butane. However, it specifies that the reaction occurs at 1atm and 300degrees celcius. The answer to part c is -5.77x10^6J but wouldn't change in internal energy be 0 because the reaction is isothermal at 300 degrees celcius?

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### Re: 2009 Midterm Question #2 Part C

combustion release heat and the heat transfer will cause change in internal energy