# Chapter 5 Principles of Chemical Reactivity: Energy and Chemical Reactions - Study Questions - Page 217b: 40

$0.45\ J/g.K$

#### Work Step by Step

From the conservation of energy principle: $24.26\ g\times C\times(98.3-25.6)\ K)=$ $82.3\ g\times 4.184\ J/g.K\times (25.6-23.3)\ K$ $C=0.45\ J/g.K$

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