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July 3, 2015

Homework Help: chemistry

Posted by Anonymous on Saturday, February 5, 2011 at 2:42am.

The combustion of 0.0222g of isooctane vapor, C8H18(g), at constant pressure raises the temperature of a calorimeter 0.400 C. The heat capacity of the calorimeter and water combined is 2.48 kJ/C. Find the molar heat of combustion of gasdeous isooctane.
C8H18(g)+12 1/2O2(g) to 8CO2(g)+9H2O(l)
b. How many grams of C8H18(g) must be burned to obtain 495kJ of heat energy?

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