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If the heat from burning 5.800 g of C6H6 is added to 5691 g of water at 21 °C, what is the final temperature of the water?

2C6H6(l) +15O2 (g)----> 12CO2(g)+6H2O(l) +6542

• CHEM -

I got an answer of 24.23 degrees celsius and it marked me wrong? Can someone please explain and tell me what they get.

• CHEM -

I posted this for David, I think. Here is a link. I think the answer is closer to 33 C.
http://www.jiskha.com/display.cgi?id=1328853263

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