Calculate the amount of heat needed to melt 173. g of solid benzene (C,H) and bring it to a temperature of 67.1 °C. Round your answer to 3 significant digits. Also, be sure your answer contains a unit symbol.
Calculate the amount of heat needed to melt 173. g of solid benzene (C,H) and bring it to a temperature of 67.1 °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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PLEASE MAKE SURE ITS CORRECT SO I DONT LOSE MY PROGRESS ON ALEKS
ROUND TO 3 SIG FIGS
UNITS IS EITHER KJ OR KJ/MOL MAKE SURE TO USE CORRECT 1

Transcribed Image Text:Calculate the amount of heat needed to melt 173. g of solid benzene (C,H,) and bring it to a temperature of 67.1 °C. Round your answer to 3 significant digits.
Also, be sure your answer contains a unit symbol.
x10
?
Expert Solution

Step 1 Finding heat required for melting solid benzene
Melting point of benzene is 5.5C.
Heat required to melt Benzene = n x ∆Hfus
Where,
∆Hfus = Enthalpy of fusion of benzene = 9.916 kJ/mol
n= number of moles of Benzene
n = Given mass / Molar mass of benzene
n = 173g / 78.11g/mol = 2.215 mol
Putting values in formula,
Heat required to melt Benzene = 2.215 mol x 9.916kJ/mol = 21.96 kJ
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