How much heat must be added to a 8.0 kg block of ice at −8∘C to change it to water at 14∘C. The specific heat of ice is 2050 J/kg⋅∘C, the specific heat of water is 4186 J/kg⋅∘C, the latent heat of fusion of ice is 334,000 J/kg, and 1 cal=4.186 J.
(a) 780 kcal
(b) 140 kcal
(c) 180 kcal
(d) 810 kcal