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Question

s D Northwest Nazaren. s Northwest Nazaren... Canvas WNetfix Mai O canvas NNetfiix G Mal Sign in to your Mc. Sign to your Mcr Ao ADP DPTCAS McGraw-Hil Map onald McQuanie Peter A. Rock Ethan Galloghy presanted by Sapling Loang Calculate the heat energy released when 24.0 g of liquid mercury ca ate ne heat e released when24.0 g of d mercury a125.00 is converted to solid mercury at its melting point. released when 24.0 g of liquid mercury Constants for mercur COHSTIS O Constants for mercury at 1 atm na 280 J mol K) er heat capacity of Hg melting point enthalpy of fusion2.29 kJ/mol ing 234.32 K Number 97.968 kJ oprevozs Grn up & View Saton Check Answer Next Ext Fs F6 F7 F8 F9 F10 F11 Scr Lk 5 6 7 8

Explanation / Answer

Tf = 234K = -39

Q1 = m*Cp*(Tf-Ti) = 24*28*(-39-25)= -43008 J

change LH to J/g

2.29*1000 1/ 200.59 = 11.41 J/g

Q2 = -m*LH = 24*11.41 = -273.84

QT = Q1+Q2 = -43008 -273.84 = -43281.84 J

QT = -43.28 kJ

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