Question

Calculate the amount of heat energy required to raise the temperature of $2g$ of mercury (Specific heat Capacity $0.12J{g}^{-1}{}^o{C}^{-1}$) from ${10}^{o}C$ to ${30}^{o}C$ :

• A. $1.2J$
• B. $2.4J$
• C. $4.8J$
• D. $9.6J$

Answer 1

The correct option is C $4.8J$

heat require to raise the temperature by $30-10={20}^{o}C$

Heat required =$ms\Delta T$

$=2\times 0.12\times 20=4.8J$