# Question #cb41a

Sep 11, 2017

0.06 $\frac{c a l}{{g}^{\circ} C}$

#### Explanation:

We know that,
Heat Absorbed or Released Which is Responsible for Temperature Change = $H = m s \Delta t$

Here Heat Needed = H = 26 KJ = 26000 J = 26000*0.24 cal = 6240 cal
Total Mass of Kryptonite = m = 21 kg = 21000 grams [I prefer CGS while doing heat problems ;-)]
Change in Temperature = $\Delta$T = ${\left(60 - 10\right)}^{\circ}$C = ${50}^{\circ}$C

Substituting all values in the specified equation, we get,

$$       6240 = 21000 * s * 50


$\Rightarrow$ s = $\frac{6240}{21000 \cdot 50}$
$\Rightarrow$ s = $0.06$ $\frac{c a l}{g} ^ \circ C$