Calculate the amount of heat needed to boil 146. g of water (H,0), beginning from a temperature of 20.1 °C. Round your answer to 3 significant digits. Also, be sure your answer contains a unit symbol.
Calculate the amount of heat needed to boil 146. g of water (H,0), beginning from a temperature of 20.1 °C. Round your answer to 3 significant digits. Also, be sure your answer contains a unit symbol.
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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Transcribed Image Text:Calculate the amount of heat needed to boil 146. g of water (H,O), beginning from a temperature of 20.1 °C. Round your answer to 3 significant digits. Also,
be sure your answer contains a unit symbol.
x10
Expert Solution
Step 1
You will need to know the heat of fusion of water.
The molar heat of vapourization for water is 40.7 kJ/mol.
First you calculate heat of vaporization of 146. g water
q1 is the heat of vaporization n of water at 0°C and q2 is the heat when the temperature of water rises from 0 degree to 20.1℃ .
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