1 kg of water at 20 degrees Celsius is converted into ice at -10 degrees Celsius. The heat capacity of water (at constant pressure) 4200(J/(kg degK) and that of ice is 2100J/(kg degK); the heat of fusion of ice at 0 deg. C is 3.36*10^5 J/kg.
a) what is the total change in entropy of the water-ice system.
b) If the density of water at 0 degC is taken as 10% than that of ice, what is the slope of the melting curve of ice at this temperature (give boyh magnitude and sign)