Question

A sample of hexane (C6H14) has a mass of 0.580 g. The sample is burned in a bomb calorimeter that has a mass of 1.900 kg and a specific heat of 3.21 J/giK. What amount of heat is produced during the combustion of hexane if the temperature of the calorimeter increases by 4.542 K?
Use q equals m C subscript p Delta T..
8.46 kJ
16.1 kJ
27.7 kJ
47.8 kJ

Answer 1

m = 1.900 kg = 1900 g, Cp = 3.21 J/g·K, ΔT = 4.542 K

q = m Cp ΔT = (1900 g)(3.21 J/g·K)(4.542 K) = 2.770×10^4 J = 27.7 kJ

Answer: 27.7 kJ.