You are studying the enthalpy of combustion of a series of hydrocarbon liquids (pentane to decane) using a bomb calorimeter. You have calibrated your calorimeter by testing the combustion of a 0.924g sample of benzoic acid (Høcomb = -3227 kJ/mol). This gave a temperature rise of 2.14 K. om this data calculate the heat capacity of the calorimeter in kJ/K. Testing the combustion of 1.00 mL samples (at 20°C) of each of the hydrocarbons resulted in the following temperature changes:

Write a balanced chemical equation for the combustion of each of the hydrocarbons and determine the heat of combustion (AcH in units if kJ/mol) for each. After you completed your measurements, a colleague approached you with a sample of anunknown hydrocarbon liquid found at the scene of an attempted arson. She asked if it would bepossible to identify the liquid by measuring the heat released in burning a sample. She was onlyable to give you 0.75 mL of the liquid. When this was combusted in the bomb calorimeter, underthe same conditions, it produced a temperature rise of 2.04 K. (iii)What was the unknown liquid?