The combustion of 2.41 g of butane (C4H10) in a calorimeter causes a rise in temperature of 12.1°C.  The calorimeter contains 4.00 kg of water and the calorimeter has a mass of 450 g. cwater   =   4.18 J/g°C     ccalorimeter   =   1.39 J/g°C           Determine: a)  the heat absorbed by the calorimeter b)  the heat absorbed by the water c)  ∆Hc  in kJ/mol of butane

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