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

A bomb calorimeter is filled with 9 atm of an unknown gaseous hydrocarbon fuel and an excess of oxygen gas at a temperature of 20.5 °C. The bomb calorimeter has a volume of 4.1 L and a heat capacity of 7.64 kJ/K. After the combustion reaction is complete the 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 combustion reaction of the unknown fuel? Please give your answer to 2 decimal places.

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

(c) Given the table of data below, what is the identity of the unknown 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.

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queen_honey_blossom answered 1 year ago
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