
Let's find the specific heat of sample using given formula :

where,
= change in temperature



Therefore, specific heat of that substance is 0.707 J/g°C
Answer:
Exothermic and H=-1.55x10^6
Explanation:
Because the water is changing it is exothermic and the h is also exothermic
Hbr is the answer when I work it out that’s what I got.