Question

The specific heat of a liquid is 800 Joules per kilogram degree Celsius.
How much heat is needed to raise the temperature of 0.50 Kg of the liquid to 10.0 degrees Celsius?

• A. 4000 J
• B. 40 J
• C. 16,000 J
• D. 160 J
• E. 16 J

Answer 1

The correct option is A 4000 J

Given : $m=0.5$ kg;$S=800$ $J/k{g}^{o}C$; $\Delta T=10.0$ ${}^{o}C$

Heat required to raise the temperature $Q=mS\left(\Delta T\right)$

$\therefore$ $Q=0.5\times 800\times 10.0$

$⟹Q=4000$ $J$