Chapter 3, Problem 3.80AQAP

Interpretation Introduction

Interpretation:

The specific heat of a substance of mass 8.36 g heated from $17.2\text{C}$ to $35.6\text{C}$ corresponding to heat absorption of 378 J should be calculated. The identity of the substance should also be deduced form its specific heat value.

Concept Introduction:

• Specific heat is the amount of heat in joules required to raise the temperature of 1 gram of a substance by $1\text{C}$ . It is expressed in terms of $\text{J/g}\text{C}$
• The amount of heat absorbed or evolved as the temperature changes from T₁ to T₂ is given as:

  $\begin{array}{l}{\text{Q = mcΔT = mc(T}}_{\text{2}}{\text{-T}}_{\text{1}}\text{) -----(1)}\\ \text{m = mass of the substance}\\ \text{c = specific heat}\end{array}$