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A bomb calorimeter is filled with 9 atm of an unknown gaseous hydrocarbon fuel and an...

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Chemistry

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?

FuelChemical FormulaMolar Heat of Combustion
etheneCH2CH2-1324.1 kJ/mol
ethaneCH3CH3-1560.6 kJ/mol
propaneCH3CH2CH3-2218.1 kJ/mol
propyneCHCCH3-1849.6 kJ/mol

(d) What is the heat of combustion for the reaction in kJ/g?Please give your answer to 2 decimal places.

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