Question

The specific heat of a liquid is $800Joules$ per kilogram degree Celcius.
How much heat is needed to to raise the temperature of $0.50kg$ of the liquid ${10.0}^{\circ }$ Celcius?

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

Answer 1

Answer: (A)

$4000J$

Given : $S=800$ $J/\left(kg{.}^{o}C\right)$ $m=0.5kg$ $\Delta T={10.0}^{o}C$

Heat required to raise the temperature $Q=mS\left(\Delta T\right)=0.50\times 800\times 10=4000$ $J$