A bomb calorimeter is filled with 9 atm of an unknown gaseoushydrocarbon fuel and an excess of oxygen gas at a temperature of20.5 °C. The bomb calorimeter has a volume of 4.1 L and a heatcapacity of 7.64 kJ/K. After the combustion reaction is completethe final temperature of the calorimeter is found to be 333.3 °C.Answer the following questions based on this information.
(a) What amount of heat in kJ was released from the combustionreaction of the unknown fuel? Please give your answer to 2 decimalplaces.
(b) What is the molar heat of combustion for the reaction inkJ/mol? Please give your answer to 2 decimal places.
(c) Given the table of data below, what is the identity of theunknown gas?
| Fuel | Chemical Formula | Molar Heat of Combustion |
|---|
| ethene | CH2CH2 | -1324.1 kJ/mol |
| ethane | CH3CH3 | -1560.6 kJ/mol |
| propane | CH3CH2CH3 | -2218.1 kJ/mol |
| propyne | CHCCH3 | -1849.6 kJ/mol |
(d) What is the heat of combustion for the reaction in kJ/g?Please give your answer to 2 decimal places.
