20 g of ice at 0 oC is added to 50 g of water at 30 oC. The container is insulated and has a water equivalent of 20g. Calculate the entropy change for the system and the surroundings. The heat of fusion of water is 6.02 kJ/mol; Cp (water)=4.184 J/K/g, Cp(ice)=2.094 J/K/g.