## Winter 2011 Final

Volume: $\Delta S = nR\ln \frac{V_{2}}{V_{1}}$
Temperature: $\Delta S = nC\ln \frac{T_{2}}{T_{1}}$

604633468
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### Winter 2011 Final

For question 1B, could anyone explain why the change in number of moles in 2 when the equation is
CH4 + 2O2 -----> 2H20 + Co2

Alex Nguyen 3I
Posts: 100
Joined: Fri Sep 25, 2015 3:00 am

### Re: Winter 2011 Final

Well the change in gas actually negative 2. That's because there's 3 moles of gas on the left side and 1 mole of gas on the right side. Also if you're confused, water is a liquid in this reaction and not a gas because it says the temperature is constant at 25 degrees celsius.