A 1.00 g sample of n-hexane (C6H14) undergoes complete combustion with excess O2 in a bomb calorimeter. The temperature of the 1502 g of water surrounding the bomb rises from 22.64°C to 29.30°C. The heat capacity of the hardware component of the calorimeter (everything that is not water) is 4042 J/°C. What is ΔU for the combustion of n-C6H14? One mole of n-C6h14 is 86.1 g. The specific heat of water is 4.184 J/g.ΔC.
a) -1.15x10^4kJ/mol b) -9.96x10^3kJ/mol c) -4.52x10^3kJ/mol d) -5.92x10^3kJ/mol