A 2.5 kg block of an unknown substance was evenly heated to 150℃. To cool it down, it was placed inside a 4 L cool water bath that had an initial temperature of 5℃. After a time, the block and water achieved thermal equilibrium, the resultant temperature being 15℃. What was the specific heat capacity of the block before it was cooled? (Use 4184   J/kg℃ as c water. Assume no external heat gain or loss.)

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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A 2.5 kg block of an unknown substance was evenly heated to 150℃. To cool it down, it was placed inside a 4 L cool water bath that had an initial temperature of 5℃. After a time, the block and water achieved thermal equilibrium, the resultant temperature being 15℃. What was the specific heat capacity of the block before it was cooled?

(Use 4184   J/kg℃
as c water.
Assume no external heat gain or loss.)

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