Question

The heat capacity of a body of mass 15 g and specific heat capacity of 2.3 Jg^-1 K^-1 is:

• A. 35.5 JK^-1
• B. 34.5 JK^-1
• C. 36.0 JK^-1
• D. 33.5 JK^-1

Answer 1

The correct option is B

34.5 JK^-1

1. From the given, the mass (m) of the body = 15 g and the specific heat capacity ( c ) = 2.3 Jg^-1 K^-1
2. Heat capacity (C') of a substance = mass (m) x specific heat capacity ( c ) of the substance.
3. By substituting the given values in the above equation, we get

$$\begin{gathered} C\text{'}=15X2.3 \\ =34.5J{K}^{-1} \end{gathered}$$

Hence, the value of heat capacity (C') of the given substance is (B) 34.5 JK^-1