Question

Question #cb41a

Answer 1

0.06 `(cal)/(g^@C)`

Explanation:

We know that,
Heat Absorbed or Released Which is Responsible for Temperature Change = `H = msDeltat`

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 = `(60 - 10)^@`C = `50^@`C

Substituting all values in the specified equation, we get,

       6240 = 21000 * s * 50

`rArr` s = `(6240)/(21000*50)`
`rArr` s = `0.06` `(cal)/g^@C`