Answer:
35,000 cal will released.
Step-by-step explanation:
By definition 1 kcal (=1000 calorie) is the approximate amount of energy released when the temperature of 1.000 kg of water is lowered by 1.000 °C (at a pressure of one atm.). It is about 4.2 kJ of energy.
q = mC∆T
where q = heat (calories); m = mass (500g); C = specific heat (1 cal/g/deg); ∆T = change in temp. Thus,
q = (500 g)(1 cal/g/deg)(95-25) = (500)(1)(70) = 35,000 cal