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calculate the energy required to heat ethanol using the information from the attatched picture

calculate the energy required to heat ethanol using the information from the attatched picture

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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calculate the energy required to heat ethanol using the information from the attatched picture

Calculate the energy required to heat 0.30 kg of ethanol from 7.8 °C to 19.5 °C. Assume the specific heat capacity of - 1 ethanol under these conditions is 2.44 J-g ''K -1 Round your answer to 2 significant digits.
Transcribed Image Text:Calculate the energy required to heat 0.30 kg of ethanol from 7.8 °C to 19.5 °C. Assume the specific heat capacity of - 1 ethanol under these conditions is 2.44 J-g ''K -1 Round your answer to 2 significant digits.
Expert Solution
Step 1 Introduction

 

Specific heat capacity :  Amount of heat required to raise the temperature of 1 kilogram (Kg) substance by 1 kelvin

mathametical expression 

 Q = m S ∆T  

 

Given that 

 Q = heat energy required =  ?  J 

 m = mass of ethanol = 0.3 Kg x 1000 g/ 1 Kg = 300 g 

S = specific heat = 2.44  J/g K 

∆T = (T2 - T1)  = (19.5  oC   - 7.8 oC)   =   (292.5 K - 280.8 K )   =  11.7 K 

                         

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