Question

a 20 kg block of ice is heated from -20 degrees Celsius to -2 degrees Celsius. how much heat does it absorbed during the heating

Answer 1

Mass of ice m = 20 kg

Initial temperature t = -20 ^o C

Final temeprature t ' = -2^o C

Specific heat of ice c = 2000 J / kg ^o C

Heat absorbed Q = mc ( t ' - t )

                             = 20(2000)(18)

                             = 720000 J