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ΔΗ vap (kJ/mol) 40.65

ΔΗ vap (kJ/mol) 40.65

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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can you help me solve number one. my answer key states the correct answer is -61 KJ released.

Thermochemistry 1 Name AH vap C solid C liquid (J/ gº°C) C gas (J/ g•°C) Tbp AH fus Тр (°C) (J/ g•°C) (°C) (J/g) (kJ/mol) H2O 0.0 100.0 333.55 40.65 2.06 4.184 1.87 Water HC2H3O2 Acetic Acid 16.0 118.1 194.8 23.7 N/A 2.05 1.06 CH3CH2OH Ethanol -117 78 109 38.56 0.97 2.3 0.95 C solid (J/ go°C) 0.902 Metal Aluminum 0.385 Соpper Iron 0.444 Silver 0.240 Zinc 0.39 1. Calculate the energy released when 25 g of water cools from a gas 100.0 °C to a liquid at 56.5 °C. F-I Q= m CAT -(259)(1.87 5/9-2)( 5Ls'c- 10.0 2) J 2. What mass of water in grams can be heated from 25.0 °C to 33.5 °C by the heat energy released when a 50.0 g chunk of aluminum cools from 100.0 °C to 33.5 °C? 3. Calculate the heat required to convert 40.0 g of acetic acid, HC2H3O2, from a solid at 16.0 °C to a liquid at 99.9 °C. CS Scanned with CamScanner
Transcribed Image Text:Thermochemistry 1 Name AH vap C solid C liquid (J/ gº°C) C gas (J/ g•°C) Tbp AH fus Тр (°C) (J/ g•°C) (°C) (J/g) (kJ/mol) H2O 0.0 100.0 333.55 40.65 2.06 4.184 1.87 Water HC2H3O2 Acetic Acid 16.0 118.1 194.8 23.7 N/A 2.05 1.06 CH3CH2OH Ethanol -117 78 109 38.56 0.97 2.3 0.95 C solid (J/ go°C) 0.902 Metal Aluminum 0.385 Соpper Iron 0.444 Silver 0.240 Zinc 0.39 1. Calculate the energy released when 25 g of water cools from a gas 100.0 °C to a liquid at 56.5 °C. F-I Q= m CAT -(259)(1.87 5/9-2)( 5Ls'c- 10.0 2) J 2. What mass of water in grams can be heated from 25.0 °C to 33.5 °C by the heat energy released when a 50.0 g chunk of aluminum cools from 100.0 °C to 33.5 °C? 3. Calculate the heat required to convert 40.0 g of acetic acid, HC2H3O2, from a solid at 16.0 °C to a liquid at 99.9 °C. CS Scanned with CamScanner
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