Acetylene, C2H2, is used in welding torches. It releases a lot of energy when burned in oxygen. The combustion of one gram of acetylene releases 48.2 kJ. A 0.750-gram sample of acetylene is burned in a bomb calorimeter (heat capacity = 1.117kJ/C) that contains 800.0 g of water. The final temperature of the bomb and water after combustion is 35.2OC. What is the initial temperature of the bomb and water?

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