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2. Calculate the molar enthalpy of combustion in a reaction where the enthalpy change is -109KJ and 3.45 moles of the substance are combusted. (2)

2. Calculate the molar enthalpy of combustion in a reaction where the enthalpy change is -109KJ and 3.45 moles of the substance are combusted. (2)

Chemistry
Chemistry
10th Edition
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
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Please answer question 2 just send me paper solutions no need to explain
1. How much energy is required to heat 200ml of water from 20 °C to 55 °C? (2) 2. Calculate the molar enthalpy of combustion in a reaction where the enthalpy change is -109KJ and 3.45 moles of the substance are combusted. (2) 3. The molar enthalpy of vaporization of propane (C3H3) is 56KJ/mol. Calculate the enthalpy change when 35g of propane vaporizes. (3) 4. A 15.0g sample of melted aluminum is put into a calorimeter. The temperature of 90g of water changes from 22.3°C to 44.4°C as the aluminum solidifies. Calculate the molar enthalpy of the solidification of aluminum. (5)
Transcribed Image Text:1. How much energy is required to heat 200ml of water from 20 °C to 55 °C? (2) 2. Calculate the molar enthalpy of combustion in a reaction where the enthalpy change is -109KJ and 3.45 moles of the substance are combusted. (2) 3. The molar enthalpy of vaporization of propane (C3H3) is 56KJ/mol. Calculate the enthalpy change when 35g of propane vaporizes. (3) 4. A 15.0g sample of melted aluminum is put into a calorimeter. The temperature of 90g of water changes from 22.3°C to 44.4°C as the aluminum solidifies. Calculate the molar enthalpy of the solidification of aluminum. (5)
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