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Chemistry
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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
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24.1 kJ of energy is lost by a 251 g Al block. If the block is initially at 125.0°C what will be its final T in  °C? (sAl = 0.902 J g-1 °C-1)

I need help on what i did wrong on the problem, the problem is on the picture and the second picture is how I did it, please tell me what I did wrong, thank you

A 24.1 kJ of energy is lost by a 251 g aluminum block. If the block is
initially at 125.0°C what will be its final temperature? (CA = 0.902 J
g1°C1)
´Al
Transcribed Image Text:A 24.1 kJ of energy is lost by a 251 g aluminum block. If the block is initially at 125.0°C what will be its final temperature? (CA = 0.902 J g1°C1) ´Al
-24.1(1000)=251(0.902)(Tf-125C)
-24100=2264.02(Tf) - 125(2264.02)
-24100+125 (2264.02)=2264.02(Tf)
258902.5=2264.02Tf
Tf=114 Celcius
Transcribed Image Text:-24.1(1000)=251(0.902)(Tf-125C) -24100=2264.02(Tf) - 125(2264.02) -24100+125 (2264.02)=2264.02(Tf) 258902.5=2264.02Tf Tf=114 Celcius
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