A chemical engineer studying the properties of fuels placed 1.655 g of a hydrocarbon in the bomb of a calorimeter and filled it with O2 gas. The bomb was immersed in 2.454 L of water and the reaction was initiated. The water temperature rose from 19.74 °C to 27.62 °C. If the calorimeter (excluding the water) had a heat capacity of 420. J/K, what was the heat of combustion of the fuel? (Hint: Enter the correct sign.)

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