6.000 g of Compound X with molecular formula CH10 are burned in a constant-pressure calorimeter containing 15.00 kg of water at 25 °C. The temperature of the water is observed to rise by 4.226 °C. (You may assume all the heat released by the reaction is absorbed by the water, and none by the calorimeter itself.) Calculate the standard heat of formation of Compound X at 25 °C. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits.

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Combustion thermochemistry problem 

6.000 g of Compound X with molecular formula CH10 are burned in a constant-pressure calorimeter containing 15.00 kg of water at 25 °C. The
temperature of the water is observed to rise by 4.226 °C. (You may assume all the heat released by the reaction is absorbed by the water, and none
by the calorimeter itself.) Calculate the standard heat of formation of Compound X at 25 °C.
Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits.
Transcribed Image Text:6.000 g of Compound X with molecular formula CH10 are burned in a constant-pressure calorimeter containing 15.00 kg of water at 25 °C. The temperature of the water is observed to rise by 4.226 °C. (You may assume all the heat released by the reaction is absorbed by the water, and none by the calorimeter itself.) Calculate the standard heat of formation of Compound X at 25 °C. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits.
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