Explain the heat capacity of the bomb calorimeter

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Problem- When 0.433g of biphenyl (C12H10) undergoes combustion in a bomb calorimeter, the temperature rises from 26.2â??C to 30.4â??C

Find Erxn for the combustion of biphenyl in kJ/mol biphenyl. The heat capacity of the bomb calorimeter, determined in a separate experiment, is 5.86 kJ/?C

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