posted by Anonymous .
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?