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Calculate the energy of combustion per gram of Methanol (kJ/g) if 29.8 mL of water is placed in the test tube and the temperature changes from 22.9 °C to 51.1°C. The initial mass of the spirit burner is 239.39 g and the final mass is 238.79 g. State your answer with correct significant digits.

Calculate the energy of combustion per gram of Methanol (kJ/g) if 29.8 mL of water is placed in the test tube and the temperature changes from 22.9 °C to 51.1°C. The initial mass of the spirit burner is 239.39 g and the final mass is 238.79 g. State your answer with correct significant digits.

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Calculate the energy of combustion per gram of Methanol (kJ/g) if 29.8 mL of water is placed in the test tube and the temperature changes from 22.9 °C to 51.1°C. The initial mass of the spirit burner is 239.39 g and the final mass is 238.79 g. State your answer with correct significant digits. Notes: • Include a negative sign if the reaction is exothermic • Do not include units in your answer.
Transcribed Image Text:Calculate the energy of combustion per gram of Methanol (kJ/g) if 29.8 mL of water is placed in the test tube and the temperature changes from 22.9 °C to 51.1°C. The initial mass of the spirit burner is 239.39 g and the final mass is 238.79 g. State your answer with correct significant digits. Notes: • Include a negative sign if the reaction is exothermic • Do not include units in your answer.
Expert Solution
Step 1: Heat of combustion

The heat of combustion indicates the heat released by a substance when it ignites completely in an environment of oxygen at STP. The molar heat of combustion is expressed as a value for one mole of the substance. A bomb calorimeter is a device used in order to determine the heat of combustion. 

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