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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1. a) How much work is done at 25 °C during the combustion of 2.03 g of ethanol, C2H5OH?
b) What is the energy of one mole of photons having a wavelength of 550 nm?
c) 2.045 g of a new compound with formula C9H8O2 is burned in a bomb calorimeter. During the combustion, the temperature of the calorimeter increases from 21.811 °C to 29.551 °C. [During calibration, the heat capacity of the calorimeter was found to be 11.75 kJ·°C-1.] What is ΔUcomb for this compound in kJ/mol?
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